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 2002 season was the Kansas City Chiefs' 33rd in the National Football League (NFL), their 43rd overall and the franchise's 40th in Kansas City, Missouri.
The 2001 season was the Kansas City Chiefs' 32nd in the National Football League (NFL) and their 42nd overall. It was their first year under head coach Dick Vermeil and 13th under general manager Carl Peterson. They finished the regular season with a 6–10 record.
The 2000 season was the Kansas City Chiefs' 31st in the National Football League (NFL), their 41st overall and their second and final season under head coach Gunther Cunningham. They failed to improve on their 9–7 record from 1999 and finished the season 7–9, marked by a series of on and off-field struggles and incidents.
The 1997 season was the Kansas City Chiefs' 28th in the National Football League (NFL) and their 38th overall. The Chiefs improved on their 9–7 record from 1996, and finished with a 13–3 record and as AFC West division champions. The Rich Gannon–Elvis Grbac quarterback controversy was a focal point of the team's season. It brewed throughout the entire season and arguably cost the Chiefs a victory in the playoffs. The Chiefs were defeated by division rival and eventual Super Bowl champion, Denver Broncos, in the 1997 playoffs. 1997 was the final season the Chiefs appeared in the playoffs during the 1990s and for the next several seasons, they fell into futility. They did not return to the playoffs until 2003.
The 1996 season was the Kansas City Chiefs' 27th in the National Football League (NFL) and their 37th overall. Following their loss to the Colts in the playoffs the year before, the Chiefs failed to improve their 13–3 record from 1995 and finishing 9–7 record and second-place finish in the AFC West. Despite being predicted as one of the eventual winners of Super Bowl XXXI by Sports Illustrated, the team missed the playoffs for the first time since 1989.
The 1992 Kansas City Chiefs season was the franchise's 23rd season in the National Football League and the 33rd overall. The Chiefs matched their 10–6 record from 1991, but were shut out by the San Diego Chargers 17–0 in the wild-card round.
The 2011 New Orleans VooDoo season was the fifth season for the franchise in the Arena Football League. The team was coached by Derek Stingley until his firing on June 26. Jon Norris, who coached the Bossier–Shreveport Battle Wings in 2010, stepped down from his General Manager position with New Orleans to become the team's interim head coach. The VooDoo played their home games at New Orleans Arena. This was the first season for the VooDoo since 2008, after the league went on hiatus in 2009 and the franchise was not active in 2010. The VooDoo went 3–15, missing the playoffs, and finishing with the worst record in the league.
The 2011 Jacksonville Sharks season was the second season for the franchise in the Arena Football League. The team was coached by Les Moss and played their home games at Jacksonville Veterans Memorial Arena. In the regular season, the Sharks went 14–4, qualifying for the playoffs as the top seed in the American Conference. After defeating the Orlando Predators in the conference semifinals, they beat the Georgia Force in the American Conference championship. Advancing to ArenaBowl XXIV, the Sharks triumphed over the Arizona Rattlers on a last-second game-winning touchdown pass to win their first ArenaBowl championship.
The 2011 Cleveland Gladiators season was the twelfth season for the franchise in the Arena Football League and the third while in Cleveland. The team was coached by Steve Thonn and played their home games at Quicken Loans Arena. The Gladiators finished the regular season 10–8, and qualified for the playoffs as the 2nd seed in the American Conference. They lost to the Georgia Force in the conference semifinals, 41–50.
The 2011 Milwaukee Mustangs season is the third season for the franchise, and the second in the Arena Football League (AFL). This is the first season for the team as the Mustangs, having previously been known as the Milwaukee Iron. The team is coached by Bob Landsee and plays their home games at Bradley Center. The Mustangs finished 7–11, missing the playoffs.
The 2011 Chicago Rush season was the 10th season for the franchise in the Arena Football League. The team was coached by Bob McMillen and played their home games at Allstate Arena. The Rush finished the regular season 13–5, qualifying for the playoffs for the 10th consecutive season. As the 2nd seed, they defeated the Dallas Vigilantes 54–41 in the conference semifinals before losing to the Arizona Rattlers 48–54 in the conference championship.
The 2011 Dallas Vigilantes season was the second season for the franchise in the Arena Football League. The team was coached by Clint Dolezel and played their home games at the American Airlines Center. The Vigilantes finished the regular season 11–7, qualifying for the playoffs for the first time in franchise history. As the 3rd seed in the National Conference, they lost to the Chicago Rush in the conference semifinals, 51–54.
The 2011 Iowa Barnstormers season was the 11th season for the franchise, and the 7th in the Arena Football League. The team was coached by J. T. Smith, who took over as interim head coach on May 17 after John Gregory resigned. The Barnstormers played their home games at Wells Fargo Arena.
The 2011 Tulsa Talons season was the 12th season for the franchise, and the second in the Arena Football League. The team was coached by Mitch Allner and played their home games at BOK Center. The Talons finished the season 8–10, failing to qualify for the playoffs. This would be the last season for the Talons in Tulsa, Oklahoma. The franchise relocated to San Antonio, Texas following this season.
The 2011 Arizona Rattlers season was the 20th season for the franchise in the Arena Football League. The team was coached by Kevin Guy and played their home games at US Airways Center. In the regular season, the Rattlers won a league-record 16 games, having lost only two, to secure home-field advantage throughout the playoffs. They defeated the Spokane Shock in the conference semifinals before beating the Chicago Rush in the conference championship. In ArenaBowl XXIV however, they fell to the Jacksonville Sharks, giving up a game-winning touchdown with no time left on the clock.
The 2011 San Jose SaberCats season was the 15th season for the franchise in the Arena Football League. The team was coached by Darren Arbet and played their home games at HP Pavilion at San Jose. This was the first season for the SaberCats since 2008, after the league went on hiatus in 2009 and the franchise wasn't active in 2010.
The 2011 Spokane Shock season was the sixth season for the franchise, and the second in the Arena Football League, coming off of their victory in ArenaBowl XXIII. The team was coached by Rob Keefe and played their home games at Spokane Veterans Memorial Arena. The Shock finished the regular season 9–9, qualifying for the playoffs as the 4th seed in the National Conference. They lost to the Arizona Rattlers in the conference semifinals, 33–62.
The 2011 Utah Blaze season was the fifth season for the franchise in the Arena Football League. The team was coached by Ron James and moved back to EnergySolutions Arena for home games, after playing at Maverik Center in 2010. The Blaze finished the season 9–9, missing the playoffs.
The 2019 season was the Kansas City Chiefs' 50th in the National Football League (NFL), their 60th overall, their seventh under head coach Andy Reid and third under general manager Brett Veach.