The 1991 Kansas City Chiefs season was the franchise's 22nd season in the National Football League and 32nd overall. They failed to improve on their 11–5 record from 1990 and finished with a 10–6 record. Compared to the Chiefs' 1990 campaign, Steve DeBerg’s consistency had dropped. The running game made up for lost time as Christian Okoye ran for 1,031 yards for the season, Barry Word was productive, and rookie Harvey Williams was outstanding in limited playing time. The Chiefs defeated their division rival, the Los Angeles Raiders in the Wild Card round, resulting in the franchise's first playoff victory since Super Bowl IV in 1970. The next week, the Chiefs lost to the Buffalo Bills in the divisional playoffs.
The 1994 Los Angeles Rams season was the franchise's 57th season in the National Football League, their 58th overall, and their 49th and final in the Greater Los Angeles Area until their 2016 relocation back to Los Angeles. After nearly 50 years in the Greater Los Angeles Area, including 15 seasons at Anaheim Stadium, owner Georgia Frontiere announced that the team would relocate to St. Louis, Missouri on January 15, 1995. While the owners initially rejected the move, permission was eventually granted therefore bringing an end to Southern California's first major professional sports franchise until 2016.
The 1984 Los Angeles Rams season was the franchise's 47th season in the National Football League, their 48th overall, and their 39th in the Greater Los Angeles Area. The Rams looked to improve on their 9–7 record from 1983 and make the playoffs for the second consecutive season and 10th in the last 12. They improved on their record by one game, going 10–6, good enough for second place in the NFC West behind the 15–1 San Francisco 49ers. In the playoffs, the Rams lost a low-scoring game to the New York Giants at home, 16–13. During this season, second-year running back Eric Dickerson set the NFL record for most rushing yards in a season, with 2,105 yards.
The 1985 Kansas City Chiefs season was the franchise's 16th season in the National Football League and the 26th overall.
The 2004 San Diego Chargers season was the franchise's 35th season in the National Football League (NFL), its 45th overall and the third under head coach Marty Schottenheimer. It would be the first season the franchise would have involving quarterback Philip Rivers. The team improved on their 4–12 record in 2003 and finished the regular season 12–4, made the playoffs for the first time in nine years, and captured their first division title since the 1994 season. In the playoffs they lost in overtime to the New York Jets. At the end of the season Marty Schottenheimer was named NFL Coach of the Year.
The 1981 San Francisco 49ers season was the franchise's 32nd season in the National Football League (NFL), their 36th overall and their third under head coach Bill Walsh.
The 1994 season was the San Francisco 49ers' 45th in the National Football League (NFL), the 49th overall and their sixth under head coach George Seifert. This season was highlighted by a victory in Super Bowl XXIX. The championship made San Francisco the first team to win five Super Bowls. After losing to the Dallas Cowboys in the previous two conference championship games, the 49ers made significant acquisitions in the 1994 free agent market. This included the signing of two-sport star Deion Sanders and Cowboys linebacker Ken Norton, Jr. Sanders had a major impact on the team's success, winning the NFL Defensive Player of the Year Award and recording six interceptions. The 49ers won their division, the NFC West, for the eighth time in nine seasons.
The 1989 season was the San Francisco 49ers' 40th in the National Football League (NFL), their 44th overall and their 1st season under head coach George Seifert. After going 14–2 in the regular season, the 49ers completed the season with one of the most dominant playoff runs of all time, outscoring opponents 126–26, earning their fourth Super Bowl victory and their second consecutive, where they bent over the Broncos, 55–10. They finished with the best record in the NFL for the first time since 1987. Their two losses were by a combined 5 points.
The 1988 season was the San Francisco 49ers' 39th in the National Football League (NFL), their 43rd overall, and their tenth and final season under head coach Bill Walsh. The season was highlighted by their third Super Bowl victory. They failed to improve on their 13–2 record from 1987, and the 49ers struggled to a 6–5 record at the midway point and were in danger of missing the playoffs for the first time since 1982, but rose to defeat the Washington Redskins on a Monday night, eventually finishing the season at 10–6. They gained a measure of revenge by thrashing the Minnesota Vikings 34–9 in the first round of the playoffs; the Vikings had upset the #1-seeded 49ers the previous season in the divisional round. The 49ers then traveled to Chicago's Soldier Field, where the wind-chill factor at game time was 26 degrees below zero. They defeated the Chicago Bears 28–3 in the NFC Championship game.
The 1984 San Francisco 49ers season was their 39th season in the National Football League (NFL). The season was highlighted by their second Super Bowl victory. The franchise had its best season ever, with a record of 15 wins and only 1 loss to the Pittsburgh Steelers. Quarterback Joe Montana would be awarded the Super Bowl's Most Valuable Player Award for the second time in his career, joining Bart Starr and Terry Bradshaw as the only two-time Super Bowl MVPs.
The 2016 season was the San Diego Chargers' 47th in the National Football League (NFL), their 57th overall, their 56th and final season in San Diego, California and their fourth and final season under head coach Mike McCoy.
The 2016 San Francisco 49ers season was the franchise's 67th season in the National Football League (NFL), the 71st overall, the third playing its home games at Levi's Stadium, and the only season under head coach Chip Kelly. The season saw the 49ers attempting to rebound from their 5–11 record the previous year, but finished 2–14, with their only wins coming against their division rival Los Angeles Rams. The 49ers also nearly became the first team since the 2001 Carolina Panthers to win their opener and lose the remainder of their games, prior to the 49ers' Week 16 win over the Rams. The 49ers' record was their worst since 2004, when they also finished 2–14. The 49ers' 1–7 home record tied the worst home record in franchise history. As a result, the 49ers fired Kelly and general manager Trent Baalke.
The 2016 Los Angeles Rams season was the franchise's 79th season in the National Football League (NFL) and the fifth and final under head coach Jeff Fisher. It was the franchise's 50th season in the Greater Los Angeles Area and the first since 1994. The team returned to Los Angeles after 21 seasons in St. Louis. The Rams decided from 2016 to 2019 to return to wearing white uniforms at home in Los Angeles as a nod to the Fearsome Foursome era. In Week 15 against the Seattle Seahawks, their NFC West divisional rival, the Rams wore white horns on their helmet just for the one game only, a move which would be repeated for the entire following season.
The 2017 San Francisco 49ers season was the franchise's 68th season in the National Football League (NFL) and their 72nd overall. It was also the first season under the head coach/general manager tandem of Kyle Shanahan and John Lynch. After a 0–9 start, they won 6 of their last 7 games and finished the season 6–10, improving from their last two season records. Despite this, the 49ers were eliminated from playoff contention in Week 12.
The 2017 season was the Los Angeles Rams' 80th in the National Football League (NFL), their 81st overall, their 51st in the Greater Los Angeles Area and their first under head coach Sean McVay. The Rams improved on their 4–12 record from the previous season. With a win over the Arizona Cardinals, the Rams ended a decade-long drought and clinched their first winning season since 2003 and first playoff appearance since 2004, when the club was based in St. Louis. The team played a game in London, England at Twickenham Stadium against the Arizona Cardinals in Week 7 as one of the NFL London Games.
The 2018 season was the San Francisco 49ers' 69th in the National Football League (NFL), their 73rd overall, their fifth playing their home games at Levi's Stadium and their second under the head coach/general manager tandem of Kyle Shanahan and John Lynch.
The 2019 season was the Arizona Cardinals' 100th in the National Football League (NFL), their 32nd in Arizona and their first under head coach Kliff Kingsbury, following the firing of former head coach Steve Wilks the previous season. During the offseason, the Cardinals' home stadium was renamed from University of Phoenix Stadium to State Farm Stadium. The Cardinals were one of two current teams, along with the Chicago Bears, who were among the 14 charter members of the American Professional Football Association, which later became the NFL, that celebrated its 100th season in 2019.
The 2020 season was the Los Angeles Chargers' 51st in the National Football League (NFL), their 61st overall, their fifth in the Greater Los Angeles Area, and their fourth and final season under head coach Anthony Lynn. It also marks the Chargers' first season playing their home games at SoFi Stadium in Inglewood, after using Dignity Health Sports Park in Carson as their temporary home stadium for the previous three seasons. This is also the Chargers' first season since 2007 with new uniforms, which were unveiled on April 21, 2020. The uniforms are somewhat similar in design to the ones they donned in their inaugural season in 1960.
The 2020 season was the Seattle Seahawks' 45th in the National Football League (NFL) and their 11th season under head coach Pete Carroll. With a win over the Washington Football Team in Week 15, the Seahawks made the playoffs for the third consecutive year. With a Week 17 win over the San Francisco 49ers, they improved upon their 11–5 record from the previous season. For the first time in franchise history, the Seahawks started 5–0. After a Week 16 win over the Los Angeles Rams, the Seahawks clinched the NFC West title for the first time since 2016.
The 2022 season was the Seattle Seahawks' 47th in the National Football League (NFL) and their 13th under the head coach/general manager tandem of Pete Carroll and John Schneider.