The 1977 Kansas City Chiefs season was the franchise's 8th season in the National Football League, the 15th as the Kansas City Chiefs, and the 18th overall. This season was the worst in franchise history until the 2008 season, with the Chiefs winning only two of fourteen games. After an 0–5 start, Head coach Paul Wiggin was fired following a 44–7 loss to Cleveland in week 7. Tom Bettis took over as interim head coach for the rest of the season. The team endured a six-game losing streak to conclude the season at 2–12.
The 2004 season was the Kansas City Chiefs' 35th in the National Football League (NFL), their 45th overall and their 42nd in Kansas City.
The 1973 Kansas City Chiefs season was the franchise's 4th season in the National Football League, the 11th as the Kansas City Chiefs, and the 14th overall. they finished with a 7–5–2 record and missed the playoffs for the second straight year.
The 1974 Kansas City Chiefs season was the franchise's fifth season in the National Football League, the twelfth season in Kansas City Chiefs, and the fifteenth overall, it ended with a 5–9 record and the Chiefs missed the playoffs for the third straight season consecutive and third-place finish in the AFC West, Hank Stram was fired after the season and was replaced by Paul Wiggin in 1975.
The 1975 Kansas City Chiefs season was the franchise's 6th season in the National Football League, the 13th as the Kansas City Chiefs, and the 16th overall, it ended with a second consecutive 5–9 record and the Chiefs missed the playoffs for the 4th straight year. San Francisco 49ers defensive coordinator Paul Wiggin was named the second head coach in franchise history on January 23. A former Pro Bowl defensive end for the Cleveland Browns, Wiggin inherited the unenviable task of rebuilding a squad whose pool of talent had been largely depleted due to age and a number of ill-fated trades that had left the club devoid of first-round draft choices in 1973 and 1975. After an 0–3 start to the season, Wiggin directed the Chiefs to three straight wins, beginning with a convincing 42–10 victory against the Raiders on October 12. The highlight of the season was a 34–31 upset win at Dallas on Monday Night Football. The club could not maintain the early success. Owning a 5–5 record heading into the homestretch of the season, injuries to a number of key players crippled the team. The team dropped its final four contests of the year to finish at 5–9 for the second consecutive season. The regular season finale at Oakland marked the final games in the Hall of Fame careers of Len Dawson and Buck Buchanan.
The 1978 Kansas City Chiefs season was the franchise's 9th season in the National Football League, the 16th as the Kansas City Chiefs, and the 19th overall. It began with the hiring of new head coach Marv Levy, formerly of the Canadian Football League's Montreal Alouettes. With the NFL expanding its schedule to 16 games, the Chiefs finished with a 4–12 record and 5th in the AFC West.
The 1980 Kansas City Chiefs season was the franchise's 11th season in the National Football League and 21st overall. They improved from 1979 from a 7–9 to an 8–8 record, the most wins for the franchise since an 8–6 season in 1972, but missed the playoffs for the ninth consecutive season.
The 1999 season was the San Diego Chargers' 30th in the National Football League (NFL), their 40th overall and their first under head coach Mike Riley.
The 2004 season was the Houston Texans' third in the National Football League, all of which they had spent under head coach Dom Capers. The team finished 7–9, two games better than the previous season, and came third in the AFC South, the first time they had not finished bottom. The Texans also earned their first victory over the Tennessee Titans, the franchise previously known as the Oilers, who had left Houston after the 1996 season.
The 2005 Houston Texans season was the franchise's 4th season in the National Football League and the 4th and final season under head coach Dom Capers. The Texans completed the season with the worst record in franchise history. This led to the Texans obtaining the first selection in the NFL Draft for the second time since the franchise formed in 2002. The team fired head coach Dom Capers after the season; he was replaced by Denver Broncos offensive coordinator Gary Kubiak, who would coach the team up until 2013. Their Week 3 game was postponed due to Hurricane Rita. The Texans failed to win a division game, and went 0–8 on the road for the first time in franchise history.
The 1998 Tennessee Oilers season was the franchise's 39th season overall, 29th with the National Football League (NFL), and their final season as the Oilers; they would be renamed the Titans the following year.
The 2013 Saskatchewan Roughriders season was the 56th season for the team in the Canadian Football League. The Roughriders improved upon their 8–10 record from 2012 and made the playoffs for the second straight season, while hosting their first playoff game since 2010. After defeating the BC Lions and Calgary Stampeders in the playoffs, the Roughriders qualified for their fourth Grey Cup appearance in seven years and first ever at their home stadium. The team defeated the Hamilton Tiger-Cats 45-23 in the 101st Grey Cup en route to winning the franchise's fourth championship. With the added seats at Mosaic Stadium at Taylor Field, the Roughriders led the league in attendance for the first time, with an average of 37,503 fans attending each regular season game.
The 2023 Edmonton Elks season was the 65th season for the team in the Canadian Football League and their 74th overall. After an 0–9 start to the season, the Elks were mathematically eliminated from playoff contention following their week 18 loss to the Toronto Argonauts.
The 2023 Ottawa Redblacks season was the ninth season for the team in the Canadian Football League. The Redblacks were eliminated from playoff contention following their week 18 loss to the Montreal Alouettes. This was the fourth straight season that the Redblacks had failed to qualify for the post-season.
The 2023 Hamilton Tiger-Cats season was the 65th season for the team in the Canadian Football League and their 73rd overall. The Tiger-Cats qualified for the playoffs for the fifth consecutive year following their week 17 win over the Calgary Stampeders. The team attempted to win their ninth Grey Cup championship in a year that the club is scheduled to host the 110th Grey Cup, but were defeated in the East Semi-Final by the Montreal Alouettes.
The 2023 Calgary Stampeders season was the 65th season for the team in the Canadian Football League and their 78th overall. It was Dave Dickenson's seventh season as head coach and first as general manager following his promotion.
The 2023 BC Lions season was the 65th season for the team in the Canadian Football League (CFL) and their 69th overall. The Lions qualified for the playoffs for the second straight season following their week 14 win over the Edmonton Elks. After defeating the Calgary Stampeders in the West Semi-Final, the Lions lost to the Winnipeg Blue Bombers in the West Final.
The 2023 Montreal Alouettes season was the 56th season for the team in the Canadian Football League and their 68th overall. The Alouettes qualified for the playoffs for the fourth consecutive season following their week 17 win over the Ottawa Redblacks. The team defeated the Winnipeg Blue Bombers to win their eighth Grey Cup championship.
The 2023 Toronto Argonauts season was the 65th season for the team in the Canadian Football League and their 150th year of existence. The Argonauts entered the season as defending champions following their victory in the 109th Grey Cup. The team attempted to win their league-leading 19th Grey Cup championship, but were defeated by the Montreal Alouettes in the East Final.
The 2023 Winnipeg Blue Bombers season was the 65th season for the team in the Canadian Football League (CFL) and their 90th season overall. The Blue Bombers qualified for the playoffs for the sixth consecutive season and played in their fourth straight Grey Cup game. However, the team lost the 110th Grey Cup to the Montreal Alouettes.