The 2013 Houston Texans season was the franchise's 12th season in the National Football League (NFL). The Texans failed to improve upon their 12–4 record from 2012, suffering through a season-ending 14-game losing streak following a 2–0 start and missing the playoffs for the first time since 2010. Head coach Gary Kubiak was fired after eight seasons following their eleventh loss. Defensive coordinator Wade Phillips was named the interim head coach for the final three games of the season. Out of the 14 games lose by the Texans this year, 9 of them were by one score, marking a record amount of one score losses for the franchise. Their 14-game losing streak is the worst in team history. Coming off a franchise-best 12–4 record just the year before, the Texans tie a league record with the Houston Oilers for the biggest season-to-season decline in win total. On January 3, 2014, claiming that "I'm ready to kick 2013 the hell out the door", Texans owner Robert McNair announced that former Penn State head coach Bill O'Brien would be the Texans' third head coach.
The 2013 season was the St. Louis Rams' 76th in the National Football League (NFL), their 19th in St. Louis and their second under head coach Jeff Fisher. The Rams equaled their win total from 2012, but missed the playoffs for a ninth consecutive season.
The 2014 Tennessee Titans season was the franchise's 45th season in the National Football League (NFL), the 55th overall and the 18th in the state of Tennessee. It marked the first under head coach Ken Whisenhunt, as well as the first full season following the death of longtime owner Bud Adams, who died during the 2013 season. The Titans finished the season with 10 consecutive losses to finish with a 2–14 record, not only tying the Tampa Bay Buccaneers for the league's worst record, but the Titans also suffered their worst season since 1994, when the franchise was known as the Houston Oilers.
The 2015 season was the Kansas City Chiefs' 46th in the National Football League (NFL), their 56th overall and their third under the head coach/general manager tandem of Andy Reid and John Dorsey. The Chiefs went through a poor start in their first six games as they were 1–5, and lost their star running back, Jamaal Charles, to a torn ACL in his right knee during an 18–17 Week 5 loss at home against the Chicago Bears. In week 16, after their ninth consecutive victory and the Baltimore Ravens defeating the Pittsburgh Steelers, the Chiefs clinched a playoff berth, their second in three years. They are the first team since the 1970 Cincinnati Bengals to start the season 1–5 and qualify for the playoffs. They also set the franchise record for the most consecutive victories, winning 10 in a row. In their Wild Card matchup, the Chiefs were set up to play against the Houston Texans. The Chiefs shutout the Texans 30–0 to earn their first playoff win in 22 years, ending what was at the time, until the Bengals broke the record the night the Chiefs won, an NFL record for consecutive playoff losses. The shutout was the Chiefs first ever playoff shutout and remains, as of the 2022–23 playoffs, the most recent playoff shutout in the NFL. The following week, they were defeated by the New England Patriots in the divisional round 27–20.
The 2015 season was the New Orleans Saints' 49th in the National Football League (NFL), their 40th playing home games at the Mercedes-Benz Superdome and their ninth under head coach Sean Payton. On November 16, 2015, the Saints hired Dennis Allen to replace fired defensive coordinator Rob Ryan. However, the Saints still missed the playoffs for the second consecutive season. The Saints set a new league record for the most passing touchdowns allowed with 45.
The 2016 season was the Kansas City Chiefs' 47th in the National Football League (NFL), their 57th overall and their fourth under head coach Andy Reid and the fourth and final season under general manager John Dorsey who was fired June 22, 2017. The Chiefs clinched their first AFC West division title since 2010, beginning a streak of eight consecutive that still stands as of 2023. The Chiefs also clinched a first-round bye for the first time since 2003, but lost to the Pittsburgh Steelers in the Divisional round 18–16.
The 2016 Houston Texans season was the franchise's 15th season in the National Football League (NFL) and the third under head coach Bill O'Brien. The Texans' attempt to make history as the first team to play the Super Bowl on their home field, NRG Stadium, was thwarted in the second round of the 2016–17 NFL playoffs by the eventual Super Bowl LI champion New England Patriots.
The 2016 season was the Tennessee Titans franchise's 47th in the National Football League (NFL) and their 57th overall. It also marked the franchise's 20th season in the state of Tennessee as well as the first full season under head coach Mike Mularkey, who served as the team's interim head coach for the last nine games of the 2015 season.
The 2017 Kansas City Chiefs season was the franchise's 48th season in the National Football League (NFL), the 55th as the Kansas City Chiefs, the 58th overall, the fifth under head coach Andy Reid, and first under general manager Brett Veach. They won the AFC West, but lost to the Tennessee Titans in the wild-card round after blowing a 21–3 lead at the half. The season was the first to feature future two-time MVP and three-time Super Bowl MVP Patrick Mahomes whose first start came in the last game of the regular season against the Denver Broncos, a game which had no playoff implications as the Chiefs had secured the division in Week 16.
The 2017 Houston Texans season was the franchise's 16th season in the National Football League (NFL) and the fourth under head coach Bill O'Brien. With the Texans' loss at the Titans in Week 13, Houston exceeded their loss total (7) from 2014, 2015 and 2016. The Texans clinched their first losing season since 2013, and finished in last place in the AFC South for the first time since 2013. The Texans also missed the playoffs for the first time since 2014.
The 2018 season was the Houston Texans' 17th season in the National Football League (NFL) and their fifth under head coach Bill O'Brien. This marked the first season since 2005 that Rick Smith would not be the general manager as he took a leave of absence for family reasons. Despite an 0–3 start, their first in a decade, the Texans surpassed their win total from the previous season with a Week 8 win over the Miami Dolphins. They had a franchise record 9 consecutive wins that also broke the NFL record for most consecutive wins after starting 0–3. The streak ended with a Week 14 loss to the Indianapolis Colts. With a Week 15 win over the New York Jets, the Texans clinched their first 10-win season under head coach Bill O’Brien, their first 10-win season since 2012 and their third 10-win season in franchise history.
The 2018 season was the Indianapolis Colts' 66th in the National Football League (NFL) and their 35th in Indianapolis. It was also their first season under head coach Frank Reich and second under the leadership of general manager Chris Ballard. Despite a 1–5 start, the Colts managed to improve on their 4–12 campaign from the year prior with a 38–10 victory over the Tennessee Titans, and a 5-game winning streak. On Week 16, the Colts achieved their first winning season since 2014 with a 28–27 win against the New York Giants. The next week, they beat the Tennessee Titans in a win or go home match-up to reach the playoffs for the first time since 2014 and became the third team in NFL history to qualify for the playoffs after a 1–5 start and first since the 2015 Chiefs.
The 2018 season was the Jacksonville Jaguars' 24th in the National Football League (NFL) and their second under head coach Doug Marrone. This was their first season in new uniforms, which were revealed in April 2018. The Jaguars had hopes of matching or improving on their 10–6 campaign from the year prior, but despite a 3–1 start, the Jags fell into a 7 game losing streak and failed to improve on their 10–6 record after a Week 10 loss to the Colts. After they lost to the Tennessee Titans in Week 14, the Jaguars fell to 4–9 and were officially eliminated from postseason contention. They finished 5–11, in last place in the AFC South.
The 2019 season was the Houston Texans' 18th in the National Football League (NFL) and their sixth under head coach Bill O'Brien. It also marked the first full season without the ownership of Bob McNair, who died during the 2018 season. It was, however, the first season of full ownership of both Janice McNair and D. Cal McNair. For the first time in franchise history, the team played in London, against the Jacksonville Jaguars. On June 7, 2019, the Texans fired general manager Brian Gaine after only one season.
The 2020 season was the Houston Texans' 19th season in the National Football League (NFL) and their seventh and final season under head coach Bill O'Brien. Following their week 10 loss to the Cleveland Browns, they failed to match/improve their 10–6 record from last year and failed to win 10 or more games for the first time since the 2017 season. They were eliminated from playoff contention after a Week 14 loss to the Chicago Bears and suffered their first losing season since 2017. This was also the first season since 2012 that DeAndre Hopkins was not on the roster, as he was traded to the Arizona Cardinals in the offseason. This was the Texans' final season with Deshaun Watson as the starting quarterback, as he would sit out the next season amidst sexual misconduct allegations as well as demanding to be traded. Watson's final game as a Texan was on January 2, 2021, a 38–41 loss to the Tennessee Titans, and would be traded to the Cleveland Browns a year later, on March 18, 2022.
The 2021 season was the Houston Texans' 20th season in the National Football League (NFL), and their first and only under head coach David Culley. For the first time since 2011, defensive end J. J. Watt was not on the roster, as he had signed with the Arizona Cardinals on March 5, 2021, reuniting him with former Texans teammate DeAndre Hopkins, who was traded to the Cardinals the season prior. It also was the first time since 2014 without former head coach Bill O'Brien, as he was fired just four games into the 2020 season when the Texans began 0–4.
The 2022 season was the Indianapolis Colts' 70th in the National Football League (NFL), their 39th in Indianapolis, their sixth under the leadership of general manager Chris Ballard and their fifth and final season under head coach Frank Reich.
The 2022 season was the Tennessee Titans' 53rd in the National Football League (NFL), their 63rd overall, their 26th in the state of Tennessee and their fifth under head coach Mike Vrabel.
The 2022 season was the Kansas City Chiefs' 53rd in the National Football League (NFL), their 63rd overall, their 10th under head coach Andy Reid, and their sixth under general manager Brett Veach. The Chiefs finished the regular season 14–3, improving their win total from the previous season and matching the franchise record for wins.
The 2023 season was the Houston Texans' 22nd season in the National Football League (NFL) and the first under head coach DeMeco Ryans. While the team went into the season with low expectations as a rebuilding period and started 0–2, they not only improved on their 3–13–1 record from last year with a Week 9 win over the Tampa Bay Buccaneers, but the Texans qualified for the playoffs for the first time since 2019 with a win over the Indianapolis Colts in Week 18, ending with a 10–7 record. After the Jacksonville Jaguars lost to the Tennessee Titans the day after, the Texans also clinched the AFC South for the first time since 2019. The Texans became the fifth team in NFL history to make the playoffs with both a rookie quarterback and a rookie head coach, as well as making history as the first team in NFL history to win a division entirely with a rookie head coach and rookie quarterback.