2025 Seattle Mariners season

2025  Seattle Mariners
American League West champions
League	American League
Division	West
Ballpark	T-Mobile Park
City	Seattle, Washington
Record	90–69 (.566)
Divisional place	1st
Owners	Baseball Club of Seattle, LP, represented by CEO John Stanton
Manager	Dan Wilson
Television	Root Sports Northwest (Aaron Goldsmith, Jay Buhner, Dave Valle, Angie Mentink, Ryan Rowland-Smith, Bill Krueger, Jen Mueller, Brad Adam)
Radio	ESPN-710 Seattle Mariners Radio Network (Rick Rizzs, Gary Hill Jr., Mark McLemore, Ken Phelps, Angie Mentink, Ryan Rowland-Smith, Shannon Drayer)
←  2024 Seasons

The 2025 Seattle Mariners season is the 49th season in franchise history. The Mariners are playing their 26th full season (27th overall) at T-Mobile Park, their home ballpark in Seattle, Washington. The Mariners won the American League West Division, their first divisional title since 2001.

On August 9, the Mariners retired the number 51 worn by Ichiro Suzuki, following his induction into the National Baseball Hall of Fame in July. This was the fourth number retired by the team. ^[1]

The Mariners played in the MLB Little League Classic on August 17, losing to the New York Mets. ^{[2] [3]}

Catcher Cal Raleigh had an unprecedented home run hitting season. He broke the franchise record for home runs (set by Ken Griffey Jr.) and major league records for home runs by a catcher and switch hitter in a season. ^{[4] [5]} He also won the Home Run Derby, which Griffey won three times. Raleigh was one of four players to hit at least 25 home runs (along with Randy Arozarena, Julio Rodríguez, and Jorge Polanco), the most for the team since 1997. ^[6]

On September 23, the Mariners clinched a postseason berth for the first time since 2022, with a 4–3 victory over the Colorado Rockies. The next night, the team won the American League West Division for the first time since 2001.

Offseason

Transactions

• November 1: The Mariners declined Jorge Polanco's $12 million option for the 2025 season. ^[7]
• November 15: The Mariners re-signed Casey Lawrence to a minor league contract. ^[8]
• November 19: The Tampa Bay Rays traded infielder Austin Shenton to the Mariners for cash. Shenton took the roster spot formerly held by reliever J.T. Chargois, who was traded with Shenton to the Rays in 2021. ^{[9] [10]}
• November 22: The Mariners did not tender contracts to Chargois, Josh Rojas, Austin Voth, and Sam Haggerty, making them free agents. ^[11] All four players signed with different teams.
• November 26: The Mariners announced their coaching staff for 2025. Changes from the end of 2024 included Kevin Seitzer replacing Edgar Martínez as hitting coach, Manny Acta moving from third base coach to bench coach, and Eric Young Jr. becoming first base coach. ^[12] (The team's previous bench coach, Brant Brown, was fired at the end of May 2024. ^[13] )
• December 14: The Mariners signed Sauryn Lao to a minor league contract. ^[14]
• December 19: The Mariners claimed catcher Nick Raposo off waivers. ^[15]
• January 8, 2025: Reliever Hagen Danner was claimed off waivers. ^[16]
• January 13: Donovan Solano signed a one-year, $3.5 million contract. Austin Kitchen was designated for assignment and later outrighted to Tacoma. ^{[17] [18]}
• January 14: The Chicago Cubs traded infielder Miles Mastrobuoni to the Mariners for cash. ^[19] Raposo was designated for assignment. He cleared waivers and was sent outright to Tacoma on January 17. ^[20]
• January 15: The Baltimore Orioles traded catcher Blake Hunt was traded to the Mariners for cash. ^[21] Samad Taylor was designated for assignment and subsequently sent outright to Tacoma on January 21. ^[22]
• January 21: The Kansas City Royals traded reliever Will Klein to the Mariners for international bonus pool space. The Mariners designated pitcher Tyler Jay, who had been a waiver claim earlier in January. ^[23] Jay was outrighted to Tacoma.
• January 28: The Mariners signed pitcher Luis F. Castillo to a minor league contract. ^[24]
• February 3: The Mariners re-signed Polanco to a one-year, $7 million contract. ^[25] On that day, the Cincinnati Reds also traded reliever Casey Legumina to the Mariners for cash. ^[26] Cade Marlowe and Jhonathan Díaz were both designated for assignment, though both remained with the organization on minor league deals. ^[27]
• February 20: The Mariners signed first baseman Rowdy Tellez to a minor league contract. ^[28]
• March 2: Pitcher Jackson Kowar was placed on the 60-day injured list. Reliever Seth Martinez was claimed off waivers from the Miami Marlins. ^[29] Martinez returned to Miami on March 15. ^[30]
• March 23: The Mariners released outfielder Mitch Haniger. ^{[31] [32]}
• March 25: Catcher Cal Raleigh signed a six-year, $105 million contract extension. ^[33]

Regular season

Game log

Legend
	Mariners win
	Mariners loss
	Postponement
	Clinched playoff spot
	Clinched division
Bold	Mariners team member

2025 Game Log: 90–69 (Home: 51–26, Road: 39–43)
March/April: 18–12 (Home: 12–6, Road: 6–6) # Date Opponent Score Win Loss Save Attendance Record Streak 1 March 27 Athletics 4–2 Thornton (1–0) Leclerc (0–1) Muñoz (1) 42,871 1–0 W1 2 March 28 Athletics 0–7 Springs (1–0) L. Castillo (0–1) — 25,061 1–1 L1 3 March 29 Athletics 2–4 Bido (1–0) Miller (0–1) Miller (1) 35,264 1–2 L2 4 March 30 Athletics 2–1 Woo (1–0) Sears (0–1) Muñoz (2) 27,696 2–2 W1 5 March 31 Tigers 6–9 Holton (1–0) Hancock (0–1) Hurter (1) 15,306 2–3 L1 6 April 1 Tigers 1–4 Mize (1–0) Gilbert (0–1) Kahnle (1) 17,333 2–4 L2 7 April 2 Tigers 3–2 L. Castillo (1–1) Skubal (0–2) Muñoz (3) 15,560 3–4 W1 8 April 4 @ Giants 9–10 (11) Bivens (1–1) Vargas (0–1) — 40,865 3–5 L1 9 April 5 @ Giants 1–4 Ray (2–0) Miller (0–2) Walker (3) 40,886 3–6 L2 10 April 6 @ Giants 4–5 Doval (1–0) Santos (0–1) — 41,060 3–7 L3 11 April 7 Astros 4–3 Santos (1–1) Scott (0–1) Muñoz (4) 19,383 4–7 W1 12 April 8 Astros 1–2 (12) Gusto (1–0) Hahn (0–1) Okert (1) 22,409 4–8 L1 13 April 9 Astros 7–6 Lawrence (1–0) Abreu (0–1) — 20,556 5–8 W1 14 April 11 Rangers 5–3 Vargas (1–1) Martin (0–2) Muñoz (5) 28,366 6–8 W2 15 April 12 Rangers 9–2 Woo (2–0) Rocker (0–2) — 29,943 7–8 W3 16 April 13 Rangers 3–1 Gilbert (1–1) Eovaldi (1–2) Muñoz (6) 25,100 8–8 W4 17 April 15 @ Reds 4–8 Barlow (1–0) L. Castillo (1–2) — 17,205 8–9 L1 18 April 16 @ Reds 5–3 Miller (1–2) Martinez (0–3) Muñoz (7) 11,817 9–9 W1 19 April 17 @ Reds 11–7 (10) Legumina (1–0) Ashcraft (0–1) — 18,032 10–9 W2 20 April 18 @ Blue Jays 1–3 Francis (2–2) Woo (2–1) Hoffman (5) 40,263 10–10 L1 21 April 19 @ Blue Jays 8–4 (12) Muñoz (1–0) Barnes (0–1) — 36,775 11–10 W1 22 April 20 @ Blue Jays 8–3 L. Castillo (2–2) Lucas (2–2) — 25,752 12–10 W2 23 April 22 @ Red Sox 3–8 Bello (1–0) Miller (1–3) — 33,027 12–11 L1 24 April 23 @ Red Sox 8–5 Hancock (1–1) Newcomb (0–3) Muñoz (8) 31,904 13–11 W1 25 April 24 @ Red Sox 4–3 Woo (3–1) Crochet (2–2) Muñoz (9) 35,655 14–11 W2 26 April 25 Marlins 4–8 Quantrill (2–2) Lawrence (1–1) — 29,753 14–12 L1 27 April 26 Marlins 14–0 L. Castillo (3–2) Gillispie (0–3) — 35,362 15–12 W1 28 April 27 Marlins 7–6 Evans (1–0) Meyer (2–3) Muñoz (10) 30,361 16–12 W2 29 April 29 Angels 5–3 Miller (2–3) Kochanowicz (1–4) Muñoz (11) 18,247 17–12 W3 30 April 30 Angels 9–3 Legumina (2–0) Detmers (0–1) — 16,229 18–12 W4
May: 13–14 (Home: 3–8; Road: 10–6) # Date Opponent Score Win Loss Save Attendance Record Streak 31 May 2 @ Rangers 13–1 Woo (4–1) Leiter (2–1) — 29,074 19–12 W5 32 May 3 @ Rangers 2–1 Speier (1–0) Martin (0–4) Muñoz (12) 26,726 20–12 W6 33 May 4 @ Rangers 1–8 deGrom (2–1) Evans (1–1) — 27,812 20–13 L1 34 May 5 @ Athletics 6–7 (11) Harris (1–0) Legumina (2–1) — 10,257 20–14 L2 35 May 6 @ Athletics 5–3 Snider (1–0) Ferguson (0–1) Vargas (1) 9,615 21–14 W1 36 May 7 @ Athletics 6–5 Bazardo (1–0) Murdock (0–1) Muñoz (13) 9,697 22–14 W2 37 May 9 Blue Jays 3–6 Gausman (3–3) L. Castillo (3–3) Hoffman (8) 31,564 22–15 L1 38 May 10 Blue Jays 3–6 Fluharty (3–0) Vargas (1–2) Hoffman (9) 31,182 22–16 L2 39 May 11 Blue Jays 1–9 Lauer (1–0) Miller (2–4) — 36,823 22–17 L3 40 May 12 Yankees 5–11 Schmidt (1–1) Hancock (1–2) — 27,895 22–18 L4 41 May 13 Yankees 2–1 (11) Legumina (3–1) Hill (3–1) — 38,840 23–18 W1 42 May 14 Yankees 2–3 Hamilton (1–0) Vargas (1–3) Weaver (4) 30,520 23–19 L1 43 May 16 @ Padres 5–1 Evans (2–1) Kolek (2–1) — 41,336 24–19 W1 44 May 17 @ Padres 4–1 Speier (2–0) Morejón (1–2) Muñoz (14) 42,240 25–19 W2 45 May 18 @ Padres 6–1 Woo (5–1) King (4–2) — 43,320 26–19 W3 46 May 19 @ White Sox 5–1 L. Castillo (4–3) Martin (2–5) Muñoz (15) 10,380 27–19 W4 47 May 20 @ White Sox 0–1 Houser (1–0) Lawrence (1–2) Leasure (1) 11,983 27–20 L1 48 May 21 @ White Sox 6–5 Legumina (4–1) Vasil (2–2) Muñoz (16) 10,556 28–20 W1 49 May 22 @ Astros 2–9 Dubin (1–0) Kirby (0–1) — 29,512 28–21 L1 50 May 23 @ Astros 5–3 Hancock (2–2) Abreu (1–1) Muñoz (17) 34,664 29–21 W1 51 May 24 @ Astros 1–2 Valdez (4–4) Woo (5–2) Hader (13) 35,785 29–22 L1 52 May 25 @ Astros 3–5 King (3–0) Legumina (4–2) — 35,526 29–23 L2 53 May 27 Nationals 9–1 Evans (3–1) Parker (4–4) — 19,861 30–23 W1 54 May 28 Nationals 0–9 Williams (3–5) Kirby (0–2) — 19,475 30–24 L1 55 May 29 Nationals 3–9 (10) Ferrer (2–2) Snider (1–1) — 19,599 30–25 L2 56 May 30 Twins 6–12 (10) Durán (4–1) Legumina (4–3) — 39,614 30–26 L3 57 May 31 Twins 5–4 (11) Snider (2–1) Sands (3–2) — 37,457 31–26 W1
June: 13–14 (Home: 6–5; Road: 7–9) # Date Opponent Score Win Loss Save Attendance Record Streak 58 June 1 Twins 2–1 Muñoz (2–0) Jax (1–3) — 39,003 32–26 W2 59 June 3 Orioles 1–5 Sugano (5–3) Kirby (0–3) — 21,089 32–27 L1 60 June 4 Orioles 2–3 Canó (1–4) Vargas (1–4) Bautista (11) 19,231 32–28 L2 61 June 5 Orioles 3–4 Eflin (5–2) Woo (5–3) Baker (2) 27,887 32–29 L3 62 June 6 @ Angels 4–5 Hendricks (3–6) Miller (2–5) Jansen (13) 35,915 32–30 L4 63 June 7 @ Angels 6–8 Brogdon (1–0) L. Castillo (4–4) Jansen (14) 29,407 32–31 L5 64 June 8 @ Angels 3–2 Kirby (1–3) Anderson (2–3) Muñoz (18) 31,416 33–31 W1 65 June 9 @ Diamondbacks 4–8 (11) Beeks (2–0) Vargas (1–5) — 22,799 33–32 L1 66 June 10 @ Diamondbacks 3–10 Pfaadt (8–4) Evans (3–2) Jarvis (1) 25,140 33–33 L2 67 June 11 @ Diamondbacks 2–5 Rodríguez (2–3) Woo (5–4) Miller (7) 25,969 33–34 L3 68 June 13 Guardians 7–2 Vargas (2–5) Herrin (4–2) — 34,378 34–34 W1 69 June 14 Guardians 4–3 Kowar (1–0) Clase (4–1) — 32,211 35–34 W2 70 June 15 Guardians 6–0 Hancock (3–2) Ortiz (3–8) — 40,871 36–34 W3 71 June 16 Red Sox 0–2 Giolito (3–1) Gilbert (1–2) Chapman (13) 24,490 36–35 L1 72 June 17 Red Sox 8–0 Woo (6–4) Buehler (5–5) — 26,974 37–35 W1 73 June 18 Red Sox 1–3 Crochet (7–4) L. Castillo (4–5) Weissert (3) 32,200 37–36 L1 74 June 20 @ Cubs 9–4 Bazardo (2–0) Thielbar (2–2) — 40,787 38–36 W1 75 June 21 @ Cubs 7–10 Keller (3–0) Hancock (3–3) — 39,047 38–37 L1 76 June 22 @ Cubs 14–6 Gilbert (2–2) Rea (4–3) — 36,185 39–37 W1 77 June 23 @ Twins 11–2 Woo (7–4) Ober (4–5) — 17,909 40–37 W2 78 June 24 @ Twins 6–5 Muñoz (3–0) Durán (4–3) Brash (1) 23,532 41–37 W3 79 June 25 @ Twins 0–2 Ryan (8–3) Kirby (1–4) Durán (11) 15,850 41–38 L1 80 June 26 @ Twins 1–10 Woods Richardson (3–4) Hancock (3–4) — 19,666 41–39 L2 81 June 27 @ Rangers 7–6 (12) Bazardo (3–0) Armstrong (2–3) — 30,228 42–39 W1 82 June 28 @ Rangers 2–3 (10) Armstrong (3–3) Muñoz (3–1) — 35,506 42–40 L1 83 June 29 @ Rangers 6–4 (12) Thornton (2–0) Winn (0–1) — 31,126 43–40 W1 84 June 30 Royals 6–2 Kirby (2–4) Wacha (4–8) — 27,309 44–40 W2
July: 14–12 (Home: 8–5; Road: 6–7) # Date Opponent Score Win Loss Save Attendance Record Streak 85 July 1 Royals 3–6 Erceg (3–2) Hancock (3–5) Estévez (23) 22,351 44–41 L1 86 July 2 Royals 3–2 Vargas (3–5) Zerpa (3–1) Muñoz (19) 24,752 45–41 W1 87 July 3 Royals 2–3 Lugo (6–5) Legumina (4–4) Estévez (24) 38,030 45–42 L1 88 July 4 Pirates 6–0 Woo (8–4) Falter (6–4) — 33,061 46–42 W1 89 July 5 Pirates 1–0 L. Castillo (5–5) Ferguson (2–1) Muñoz (20) 32,295 47–42 W2 90 July 6 Pirates 1–0 Kirby (3–4) Mlodzinski (2–6) Muñoz (21) 35,174 48–42 W3 91 July 8 @ Yankees 3–10 Warren (6–4) Gilbert (2–3) — 38,641 48–43 L1 92 July 9 @ Yankees 6–9 Schlittler (1–0) Evans (3–3) Williams (13) 35,651 48–44 L2 93 July 10 @ Yankees 5–6 (10) Williams (3–3) Speier (2–1) — 41,241 48–45 L3 94 July 11 @ Tigers 12–3 L. Castillo (6–5) Skubal (10–3) — 41,681 49–45 W1 95 July 12 @ Tigers 15–7 Kirby (4–4) Mize (9–3) — 36,438 50–45 W2 96 July 13 @ Tigers 8–4 Brash (1–0) Kahnle (1–2) — 34,671 51–45 W3 95th All-Star Game in Cumberland, GA 97 July 18 Astros 6–1 L. Castillo (7–5) Walter (1–3) — 41,834 52–45 W4 98 July 19 Astros 7–6 (11) Bazardo (4–0) Neris (3–2) — 31,700 53–45 W5 99 July 20 Astros 3–11 Ort (2–1) Woo (8–5) — 33,189 53–46 L1 100 July 21 Brewers 0–6 Woodruff (2–0) Kirby (4–5) — 30,085 53–47 L2 101 July 22 Brewers 1–0 Gilbert (3–3) Mears (1–3) Muñoz (22) 32,189 54–47 W1 102 July 23 Brewers 2–10 Priester (9–2) L. Castillo (7–6) — 41,449 54–48 L1 103 July 24 @ Angels 4–2 Evans (4–3) Kikuchi (4–7) Muñoz (23) 28,532 55–48 W1 104 July 25 @ Angels 2–3 (10) Zeferjahn (6–3) Legumina (4–5) — 37,821 55–49 L1 105 July 26 @ Angels 7–2 Kirby (5–5) Fermín (2–2) — 40,836 56–49 W1 106 July 27 @ Angels 1–4 Hendricks (6–7) Gilbert (3–4) Jansen (18) 27,219 56–50 L1 107 July 28 @ Athletics 3–1 L. Castillo (8–6) Sears (7–9) Muñoz (24) 9,536 57–50 W1 108 July 29 @ Athletics 1–6 Severino (5–11) Evans (4–4) — 8,671 57–51 L1 109 July 30 @ Athletics 4–5 Springs (10–7) Woo (8–6) Perkins (3) 9,165 57–52 L2 110 July 31 Rangers 6–0 Kirby (6–5) Rocker (4–5) — 28,293 58–52 W1
August: 15–12 (Home: 12–3; Road: 3–9) # Date Opponent Score Win Loss Save Attendance Record Streak 111 August 1 Rangers 4–3 Bazardo (5–0) Garcia (1–6) — 40,984 59–52 W2 112 August 2 Rangers 4–6 (11) Curvelo (1–0) Legumina (4–6) — 37,266 59–53 L1 113 August 3 Rangers 5–4 Evans (5–4) deGrom (10–4) Muñoz (25) 29,510 60–53 W1 114 August 5 White Sox 8–3 Woo (9–6) Martin (3–9) — 30,686 61–53 W2 115 August 6 White Sox 8–6 Kirby (7–5) Cannon (4–9) Muñoz (26) 32,756 62–53 W3 116 August 7 White Sox 4–3 (11) Kowar (2–0) Eisert (2–3) — 37,930 63–53 W4 117 August 8 Rays 3–2 Vargas (4–5) Jax (1–6) Brash (2) 39,780 64–53 W5 118 August 9 Rays 7–4 Evans (6–4) Boyle (1–2) Muñoz (27) 42,249 65–53 W6 119 August 10 Rays 6–3 Woo (10–6) Houser (6–4) Brash (3) 37,434 66–53 W7 120 August 12 @ Orioles 1–0 Kirby (8–5) Kremer (8–9) Muñoz (28) 19,356 67–53 W8 121 August 13 @ Orioles 3–4 Akin (4–2) Brash (1–1) — 17,290 67–54 L1 122 August 14 @ Orioles 3–5 Sugano (10–5) Evans (6–5) Enns (1) 14,083 67–55 L2 123 August 15 @ Mets 11–9 Ferguson (3–2) Helsley (3–4) Muñoz (29) 41,200 68–55 W1 124 August 16 @ Mets 1–3 McLean (1–0) Woo (10–7) Díaz (24) 42,978 68–56 L1 125 August 17 @ Mets [n 1] 3–7 Holmes (10–6) Kirby (8–6) — 2,518 68–57 L2 126 August 18 @ Phillies 7–12 Suárez (9–6) Gilbert (3–5) — 44,471 68–58 L3 127 August 19 @ Phillies 4–6 Robertson (1–0) Brash (1–2) Durán (22) 43,757 68–59 L4 128 August 20 @ Phillies 2–11 Luzardo (12–6) L. Castillo (8–7) — 38,331 68–60 L5 129 August 22 Athletics 3–2 Woo (11–7) Alvarado (1–1) Muñoz (30) 36,958 69–60 W1 130 August 23 Athletics 1–2 (10) Ferguson (3–2) Ferguson (3–3) Harris (2) 36,524 69–61 L1 131 August 24 Athletics 11–4 Gilbert (4–5) Lopez (7–7) — 37,550 70–61 W1 132 August 25 Padres 9–6 Miller (3–5) Morgan (1–2) — 27,785 71–61 W2 133 August 26 Padres 6–7 Morejón (10–4) Ferguson (3–4) Suárez (35) 35,910 71–62 L1 134 August 27 Padres 4–3 Woo (12–7) Darvish (3–4) Muñoz (31) 37,600 72–62 W1 135 August 29 @ Guardians 4–5 Herrin (5–3) Muñoz (3–2) — 32,012 72–63 L1 136 August 30 @ Guardians 3–4 Williams (9–5) Gilbert (4–6) Smith (9) 33,203 72–64 L2 137 August 31 @ Guardians 4–2 Miller (4–5) Bibee (9–11) Muñoz (32) 34,136 73–64 W1
September: 17–5 (Home: 10–0; Road: 7–5) # Date Opponent Score Win Loss Save Attendance Record Streak 138 September 1 @ Rays 2–10 Baz (9–11) L. Castillo (8–8) — 10,046 73–65 L1 139 September 2 @ Rays 5–6 Kelly (1–3) Speier (2–2) Cleavinger (2) 7,883 73–66 L2 140 September 3 @ Rays 4–9 Houser (8–4) Kirby (8–7) — 8,589 73–67 L3 141 September 5 @ Braves 1–4 Kinley (5–3) Speier (2–3) Iglesias (24) 36,203 73–68 L4 142 September 6 @ Braves 10–2 Speier (3–3) Hernández (4–3) — 35,700 74–68 W1 143 September 7 @ Braves 18–2 L. Castillo (9–8) Wentz (5–6) — 31,119 75–68 W2 144 September 8 Cardinals 4–2 Woo (13–7) Graceffo (3–1) Muñoz (33) 22,899 76–68 W3 145 September 9 Cardinals 5–3 Ferguson (4–4) Liberatore (7–12) Muñoz (34) 23,044 77–68 W4 146 September 10 Cardinals 4–2 (13) Hancock (4–5) Fernandez (0–3) — 25,495 78–68 W5 147 September 11 Angels 7–6 (12) J. Castillo (2–2) Peralta (0–1) — 19,129 79–68 W6 148 September 12 Angels 2–1 Vargas (5–5) Brogdon (3–2) Muñoz (35) 36,143 80–68 W7 149 September 13 Angels 5–3 Woo (14–7) Farris (1–1) Brash (4) 38,962 81–68 W8 150 September 14 Angels 11–2 Kirby (9–7) Hendricks (7–10) — 42,513 82–68 W9 151 September 16 @ Royals 12–5 Gilbert (5–6) Wacha (9–12) — 20,017 83–68 W10 152 September 17 @ Royals 5–7 Erceg (8–4) Brash (1–3) Estévez (40) 19,127 83–69 L1 153 September 18 @ Royals 2–0 L. Castillo (10–8) Kolek (5–6) Muñoz (36) 18,137 84–69 W1 154 September 19 @ Astros 4–0 Woo (15–7) Brown (12–8) — 41,471 85–69 W2 155 September 20 @ Astros 6–4 Kirby (10–7) Valdez (12–11) Muñoz (37) 42,065 86–69 W3 156 September 21 @ Astros 7–3 Gilbert (6–6) Alexander (4–2) — 41,893 87–69 W4 157 September 23 Rockies 4–3 Speier (4–3) Mejía (2–2) Muñoz (38) 35,925 88–69 W5 158 September 24 Rockies 9–2 L. Castillo (11–8) Gordon (6–8) — 42,883 89–69 W6 159 September 25 Rockies 6–2 Ferguson (5–4) Blalock (2–6) — 40,686 90–69 W7 160 September 26 Dodgers – — – 161 September 27 Dodgers – — – 162 September 28 Dodgers – — –

Season summary

April

The Mariners started poorly, going 4–8 to begin the season, including being swept by the San Francisco Giants. Starting with an 8th inning grand slam by Randy Arozarena on April 9, ^[34] the team's performance improved enough to lead the AL West at the end of the month. The team won their last seven series of the month. ^[35] Rowdy Tellez hit home runs in three consecutive games at Rogers Centre, his former home ballpark, to help win a series against the Toronto Blue Jays. ^[36] Several players had career-best performances, with Dylan Moore and Jorge Polanco winning back-to-back AL Player of the Week awards. ^{[37] [38]} Their offense, along with Cal Raleigh's 10 home runs, carried the Mariners. ^[39] Closer Andrés Muñoz tied for the MLB lead with 11 saves and did not allow a run. ^[40]

The team was beset by injuries: starting pitcher George Kirby and relievers Matt Brash and Troy Taylor started the season on the injured list, ^[41] and regulars Víctor Robles, ^[42] Logan Gilbert, Ryan Bliss, Moore, Luke Raley, and Gregory Santos ended April injured. ^[43] Polanco also dealt with a knee injury that prevented him from switch hitting or playing defense. ^[44] As part of the team's reinforcements, Ben Williamson, Logan Evans, and Sauryn Lao all made their major league debuts. ^{[45] [46]}

May

The Mariners won their ninth consecutive series with a five-run deficit to defeat the Athletics 6–5 on May 8. ^[47] However, the team then lost five of six games at home, including being swept by the Toronto Blue Jays. In the final game of the homestand, Aaron Judge of the New York Yankees hit his league-leading 15th home run. ^{[48] [49]} Reversing that streak, the Mariners then won five of six on the road, including sweeping the San Diego Padres to open the Vedder Cup and winning two against the Chicago White Sox. ^{[50] [51]} Julio Rodríguez hit a decisive grand slam on May 19. ^[52]

However, the team ended the month in a slump, losing three out of four games in Houston to the Astros and three out of five games at home. On May 30, Andrés Muñoz blew his third save of the month as the team fell behind Houston in the AL West. ^[53] On May 31, Cole Young had a walk-off in his MLB debut, a fielder's choice in a 5–4, 11-inning win over the Minnesota Twins. Earlier in that game, Cal Raleigh hit his 22nd home run, tied for the MLB lead with Shohei Ohtani. ^[54]

Raleigh led the team, batting .304 with 12 home runs and 26 RBI in May. ^[55] J. P. Crawford moved up to the leadoff role, hitting a first-pitch home run on May 4. ^{[56] [57]} The team continued to look for an everyday right fielder, promoting Rhylan Thomas for his MLB debut on May 2, ^[58] then claiming Leody Taveras off waivers from the Texas Rangers. ^[59] The team's first base platoon of Rowdy Tellez and Donovan Solano also struggled. ^{[60] [61]}

On the mound, George Kirby made his first start of the season on May 22, ^[62] but Bryce Miller briefly went on the injured list, returning on May 31. ^[63] Brash returned from injury, pitching on May 3 for the first time since the 2023 season. ^[64] Other bullpen reinforcements included Jackson Kowar, who made his Mariners debut on May 28, ^[65] Casey Lawrence, who returned to the team after being claimed by Toronto, and Jesse Hahn, who was called up on May 21 when Lawrence was designated for assignment for the fifth time that season. ^[66] Blas Castaño made his MLB debut, pitching the final three innings of a 9–0 loss to the Washington Nationals on May 28. ^[67] Despite the blown saves, Muñoz allowed his first earned run on May 30 and led the majors with 17 saves. ^[68]

June

A Randy Arozarena walk-off single, following another Andrés Muñoz blown save against the Twins on June 1 put the Mariners back in first in the AL West. ^[69] However, a 1–8 stretch put the Mariners behind Houston. The Mariners were swept on the road in Baltimore, ^[70] won one game out of three against the Los Angeles Angels in Anaheim, then were swept by the Arizona Diamondbacks, with Josh Naylor hitting a walk-off grand slam off Carlos Vargas on June 9 and Eugenio Suárez hitting a grand slam on June 11. ^{[71] [72] [73]} The Mariners then swept the Cleveland Guardians at home, with Jorge Polanco hitting a walk-off single off closer Emmanuel Clase on June 14. ^[74] The next day, Crawford hit a home run on Father's Day. ^[75] The Boston Red Sox then won two of three in Seattle, with the lone win coming as Cal Raleigh hit a grand slam and Bryan Woo threw 7 shutout innings on June 17. ^{[76] [77]}

The Mariners started their road trip strong, winning two games against the Chicago Cubs. In the rubber match on June 22, Donovan Solano and Dominic Canzone both hit two home runs. ^[78] Seattle won its first two games in Minnesota, clubbing four home runs on June 23, before losing the final two games of the series to the Twins. ^{[79] [80]} Returning home, the Mariners won two 12-inning games against the Texas Rangers ^[81] and beat the Kansas City Royals on June 30. In that game, Raleigh hit his 33rd home run, tied for third most by any player at the end of June. Arozarena also hit his 100th major league home run. ^[82]

Raleigh was named the AL Player of the Month for June. He hit .300 and led the AL with 11 home runs and had a .690 slugging percentage and 3 stolen bases. He also committed to participate in the Home Run Derby in July. ^[83] He was also named the AL Player of the Week on June 1 and June 22. ^[38]

After two starts, Bryce Miller returned to the injured list on June 10 and was replaced by spot starter Logan Evans. ^[63] Logan Gilbert made his return to the rotation on June 16 but topped out at 5+1⁄3 innings in his three June starts. ^{[84] [85]} Woo remained the team's most dependable starter, reaching 16 consecutive starts in which he pitched at least 6 innings on June 28. ^[86] George Kirby tossed a career-high 14 strikeouts in a win on June 8. ^[87]

The Mariners began making changes to their lineup. Infield prospects Cole Young and Ben Williamson, both called up during the season, started regularly at second base and third base, respectively. ^{[88] [89]} Right fielder Dominic Canzone hit a 450-foot home run in his first game after being called up on June 10, replacing Leody Taveras, who was designated for assignment (DFA). ^[90] The team DFA'd Rowdy Tellez on June 20 as Luke Raley returned from injury. ^[61] Donovan Solano, the right-handed half of the first base platoon, had his strongest month of the season, batting .385/.429/.577 in 17 games. ^{[91] [92] [93]}

July

On July 2, Cal Raleigh was named the starting catcher in the All-Star Game. ^[94] On July 6, Andrés Muñoz, Julio Rodríguez, and Bryan Woo were selected to the AL team, with Randy Arozarena later replacing Rodríguez. ^{[95] [96]} Raleigh won the Home Run Derby, the second Mariner to win the contest, following three-time winner Ken Griffey Jr. ^[97] In the All-Star Game, Raleigh was 1-for-2, Arozarena 0-for-3, Woo pitched a scoreless third inning, and Muñoz got two outs in the 8th inning. ^[98]

Prior to the All-Star Break, the Mariners lost two of the final three games at home to the Kansas City Royals, demoting Emerson Hancock after a poor start. ^[99] Seattle then swept the Pittsburgh Pirates with three straight shutouts. Arozarena clinched the sweep by homering off Carmen Mlodzinski, pitching in relief of ace Paul Skenes, for a 1–0 victory on July 7. It was the franchise's first three-game sweep in which they did not allow a run. ^{[100] [101]} The team followed it up with two more sweeps, first getting swept by the New York Yankees at Yankee Stadium, wasting Woo taking a no-hitter into the 8th inning on July 10. The Yankees won in a walk off after Muñoz blew a save after tipping pitches to New York. ^{[102] [103]} The Mariners rebounded, sweeping the AL Central-leading Detroit Tigers, including besting reigning Cy Young Award winner Tarik Skubal on July 11. The final score was 12–3, with Raleigh hitting two home runs, including a grand slam late in the game. ^{[104] [105]}

After the All-Star Break, the Mariners faced another division leader, the Houston Astros, at home. Seattle won the first two games of the series, with Cole Young hitting a walk-off single in the 11th inning on July 19 to pull Seattle within three games of the division lead. ^[106] Facing a third consecutive division leader, the Mariners lost two out of three games to the Milwaukee Brewers, with a Raleigh home run and scoreless performance by Logan Gilbert and the bullpen snapping Milwaukee's 11-game win streak with a 1–0 win on July 22. ^{[107] [108]}

The Mariners then embarked on a poor intra-division road trip, splitting a four game series with the Los Angeles Angels in Anaheim and losing two out of three games to the Athletics in West Sacramento. During this stretch, the team improved their offense in two trades with the Arizona Diamondbacks, acquiring Josh Naylor on July 25 and Eugenio Suárez on July 30. Arizona received pitchers Brandyn Garcia and Ashton Izzi for Naylor and first baseman Tyler Locklear and pitchers Juan Burgos and Hunter Cranton for Suárez. ^{[109] [110] [111]} Ahead of the trade deadline, the team also acquired left-handed reliever Caleb Ferguson from the Pirates for pitcher Jeter Martinez on July 30. ^[112] The Mariners did not trade away any of their top prospects. President of baseball operations Jerry Dipoto said the team sought to add even more relief pitchers. ^[113] The Mariners won Suárez's first game back in Seattle, a 6–0 win over the Texas Rangers. In that game, Raleigh his his league-leading 42nd home run. He hit the most home runs in a season by a switch-hitting catcher, surpassing Todd Hundley in 1996. ^{[114] [115]}

September

On September 23, the Mariners clinched a playoff spot, their first since 2022, by beating the Colorado Rockies. ^{[116] [117]} The next night, the Mariners defeated the Rockies 9–2 to clinch their first AL West title since the 2001 season. Raleigh hit two home runs, becoming the fourth AL player ever to hit 60 home runs in a season. ^[118] On September 25, the Mariners completed a sweep of the lowly Rockies, securing a bye to the American League Division Series due to a loss by the Cleveland Guardians. Eugenio Suárez homered, matching his best single-season total with 49 home runs. ^{[119] [120]}

Season standings

American League West

• v
• t
• e

AL West

Team	W	L	Pct.	GB	Home	Road
Seattle Mariners	90	69	.566	—	51‍–‍27	39‍–‍42
Houston Astros	85	74	.535	5	46‍–‍35	39‍–‍39
Texas Rangers	81	79	.506	9½	48‍–‍33	33‍–‍46
Athletics	75	84	.472	15	35‍–‍43	40‍–‍41
Los Angeles Angels	71	88	.447	19	38‍–‍40	33‍–‍48

American League Wild Card

• v
• t
• e

Division leaders

Team	W	L	Pct.
Toronto Blue Jays	92	68	.575
Seattle Mariners	90	69	.566
Cleveland Guardians	86	74	.537

• v
• t
• e

Wild Card teams
(Top 3 teams qualify for postseason)

Team	W	L	Pct.	GB
New York Yankees	92	68	.575	+6
Boston Red Sox	88	72	.550	+2
Detroit Tigers	86	74	.537	—
Houston Astros	85	74	.535	½
Texas Rangers	81	79	.506	5
Kansas City Royals	80	79	.503	5½
Tampa Bay Rays	77	83	.481	9
Athletics	75	84	.472	10½
Baltimore Orioles	75	85	.469	11
Los Angeles Angels	71	88	.447	14½
Minnesota Twins	69	91	.431	17
Chicago White Sox	59	101	.369	27

Record vs. opponents

Record vs. American League

2025 American League record v t e Source: MLB Standings Grid – 2025
Team	ATH	BAL	BOS	CWS	CLE	DET	HOU	KC	LAA	MIN	NYY	SEA	TB	TEX	TOR	NL
Athletics	—	4–2	3–3	5–1	2–4	4–2	8–5	3–0	4–9	4–3	2–4	6–7	3–3	5–8	2–5	20–28
Baltimore	2–4	—	5–8	6–0	3–4	1–5	3–4	2–4	5–1	0–6	4–6	5–1	7–6	2–4	6–7	24–24
Boston	3–3	8–5	—	4–3	4–2	0–3	4–2	4–2	1–5	3–3	9–4	3–3	10–3	3–4	5–8	26–22
Chicago	1–5	0–6	3–4	—	2–11	5–8	3–3	3–10	3–3	8–5	1–6	1–5	4–2	2–4	3–3	19–26
Cleveland	4–2	4–3	2–4	11–2	—	8–5	4–2	8–5	3–3	9–4	3–3	2–4	5–2	0–3	3–3	20–28
Detroit	2–4	5–1	3–0	8–5	5–8	—	4–2	9–4	5–2	8–5	4–2	2–4	3–3	2–4	3–4	23–25
Houston	5–8	4–3	2–4	3–3	2–4	2–4	—	3–3	6–4	5–1	3-3	5–8	3–4	7–6	4–2	31–17
Kansas City	0–3	4–2	2–4	10–3	5–8	4–9	3–3	—	3–3	7–6	0–6	3–4	3–3	6-1	4–2	26–22
Los Angeles	9–4	1–5	5–1	3–3	3–3	2–5	4–6	3–3	—	2–4	3–4	4–9	3–3	5–8	2–4	22–26
Minnesota	3–4	6–0	3–3	5–8	4–9	5–8	1–5	6–7	4–2	—	2–4	3–4	3–3	3–3	2–4	19–26
New York	4–2	6–4	4–9	6–1	3–3	2–4	3–3	6–0	4–3	4–2	—	5–1	9–4	4–2	5–8	26–22
Seattle	7–6	1–5	3–3	5–1	4–2	4–2	8–5	4–3	9–4	4–3	1–5	—	3–3	10–3	2–4	25–20
Tampa Bay	3–3	6–7	3–10	2–4	2–5	3–3	4–3	3–3	3–3	3–3	4–9	3–3	—	3–3	7–3	28–20
Texas	8–5	4–2	4–3	4–2	3–0	4–2	6–7	1-6	8–5	3–3	2–4	3–10	3–3	—	2–4	25–23
Toronto	5–2	7–6	8–5	3–3	3–3	4–3	2–4	2–4	4–2	4–2	8–5	4–2	3–7	4–2	—	30–18

Updated with the results of all games through September 25, 2025.

Record vs. National League

2025 American League record vs. National League v t e Source: MLB Standings
Team	AZ	ATL	CHC	CIN	COL	LAD	MIA	MIL	NYM	PHI	PIT	SD	SF	STL	WSH
Athletics	1–2	2–1	0–3	3–0	2–1	1–2	2–1	1–2	1–2	1–2	1–2	1–2	1–5	1–2	2–1
Baltimore	1–2	3–0	1–2	1–2	2–1	2–1	1–2	1–2	2–1	1–2	3–0	3–0	1–2	1–2	1–5
Boston	1–2	3–3	1–2	2–1	3–0	2–1	2–1	0–3	2–1	1–2	1–2	1–2	1–2	3–0	3–0
Chicago	1–2	1–2	1–5	2–1	2–1	0–3	2–1	1–2	1–2	2–1	3–0	1–2	2–1	0–3	0–0
Cleveland	1–2	0–3	0–3	1–5	2–1	1–2	2–1	2–1	3–0	1–2	3–0	0–3	2–1	0–3	2–1
Detroit	3–0	0–3	2–1	1–2	3–0	0–3	1–2	1–2	1–2	1–2	2–4	2–1	3–0	2–1	1–2
Houston	3–0	2–1	2–1	2–1	4–2	3–0	2–1	1–2	2–1	3–0	2–1	2–1	0–3	1–2	2–1
Kansas City	2–1	2–1	2–1	1–2	3–0	1–2	1–2	1–2	1–2	1–2	3–0	1–2	2–1	3–3	2–1
Los Angeles	2–1	2–1	0–3	1–2	1–2	6–0	1–2	0–3	0–3	2–1	1–2	1–2	2–1	2–1	1–2
Minnesota	1–2	0–3	2–1	1–2	1–2	1–2	1–2	2–4	2–1	0–0	2–1	2–1	3–0	0–3	1–2
New York	1–2	2–1	1–2	1–2	2–1	1–2	0–3	3–0	3–3	1–2	2–1	2–1	1–2	3–0	3–0
Seattle	0–3	2–1	2–1	2–1	2–0	0–0	2–1	1–2	1–2	0–3	3–0	5–1	0–3	3–0	1–2
Tampa Bay	2–1	2–1	1–2	0–3	2–1	1–2	3–3	2–1	3–0	0–3	2–1	3–0	2–1	2–1	3–0
Texas	2–4	3–0	1–2	2–1	3–0	1–2	0–3	3–0	2–1	0–3	2–1	1–2	1–2	2–1	2–1
Toronto	2–1	2–1	2–1	2–1	3–0	1–2	2–1	1–2	0–3	2–4	1–2	3–0	3–0	3–0	3–0

Updated with the results of all games through September 25, 2025.

Postseason

Game log

2025 Postseason game log: 0–0 (Home: 0–0; Away: 0–0)
AL Division Series: 0–0 (Home: 0–0; Away: 0–0) # Date Opponent Score Win Loss Save Attendance Record 1 October 4 TBD – (0–0) (0–0) – – 2 October 5 TBD – (0–0) (0–0) – – 3 October 7 @ TBD – (0–0) (0–0) – – 4* October 8 @ TBD – (0–0) (0–0) – – 5* October 10 TBD – (0–0) (0–0) – –
Legend:       = Win       = Loss       = Postponement Bold = Mariners team member

Postseason rosters

Playoff rosters
American League Division Series Pitchers: Catchers: Infielders: Outfielders:

Roster

Seattle Mariners roster v t e
Active roster				Inactive roster		Coaches / other
Pitchers Starting rotation 58 Luis Castillo 36 Logan Gilbert 68 George Kirby 50 Bryce Miller 22 Bryan Woo Bullpen 83 Eduard Bazardo 47 Matt Brash 43 Caleb Ferguson 26 Emerson Hancock 77 Luke Jackson 64 Casey Legumina 55 Gabe Speier 54 Carlos Vargas Closer(s) 75 Andrés Muñoz		Catchers  5 Harry Ford 18 Mitch Garver 29 Cal Raleigh Infielders  3 J. P. Crawford 12 Josh Naylor  7 Jorge Polanco 76 Leo Rivas 28 Eugenio Suárez  2 Cole Young Outfielders 56 Randy Arozarena  8 Dominic Canzone 20 Luke Raley 10 Victor Robles 44 Julio Rodríguez		Pitchers 62 Blas Castaño 74 Jhonathan Díaz 73 Logan Evans -- Domingo Gonzalez 37 Jackson Kowar 60 Tayler Saucedo 59 Troy Taylor Infielders 21 Miles Mastrobuoni  0 Samad Taylor  9 Ben Williamson Outfielders 31 Rhylan Thomas		Manager  6 Dan Wilson Coaches 14 Manny Acta (bench) 57 Tony Arnerich (bullpen) 66 Fleming Baez (bullpen catcher) 40 Trent Blank (director of pitching strategy) 97 Louis Boyd (field coordinator) 80 Danny Farquhar (assistant pitching) 16 Perry Hill (infield) 70 Bobby Magallanes (assistant hitting) 11 Edgar Martínez (director of hitting strategy) 45 Kristopher Negrón (third base) 95 Justin Novak (bullpen catcher) 33 Kevin Seitzer (hitting) 32 Pete Woodworth (pitching) 53 Eric Young Jr. (first base) 60-day injured list  1 Ryan Bliss 48 Gregory Santos 46 Trent Thornton 28 active, 11 inactive 7-, 10-, or 15-day injured list # Personal leave Roster and coaches updated September 12, 2025 Transactions • Depth chart → All MLB rosters

Farm system

See also: Minor League Baseball

Level	Team	League	Manager
AAA	Tacoma Rainiers	Pacific Coast League	John Russell
AA	Arkansas Travelers	Texas League	Ryan Scott
High-A	Everett AquaSox	Northwest League	Zach Vincej
A	Modesto Nuts	California League	Luis Caballero
Rookie	ACL Mariners	Arizona Complex League	Rico Reyes
Foreign Rookie	DSL Mariners 1	Dominican Summer League	Luis Matias

Notes

1. Played at Bowman Field in Williamsport, Pennsylvania

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External links

• Official website
• 2025 Seattle Mariners season at Baseball Reference