Here is a comprehensive summary of the 2025 Kansas City Chiefs season:

The 2025 Kansas City Chiefs season marked a stunning collapse for the three-time defending AFC champions, who entered the year under head coach Andy Reid and general manager Brett Veach hoping to reach a fourth straight Super Bowl. After stumbling to an 0–2 start before recovering to 5–3, the team fell apart in the second half, going just 1–8 in their final nine games—including a six-game losing streak—to finish with their first losing season since 2012. The downturn culminated in Week 15, when star quarterback Patrick Mahomes suffered a season-ending ACL tear against the Los Angeles Chargers, forcing backups Gardner Minshew and eventually third-stringer Chris Oladokun into the starting role. Remarkably, after setting an NFL record with 12 one-possession victories the prior season, the Chiefs went just 1–9 in such games and finished 1–7 on the road, failing to win the AFC West (first time since 2015) and missing the playoffs for the first time since 2014. Despite the on-field failures, the team set a regular-season viewership record when their Thanksgiving matchup against the Dallas Cowboys drew 57.2 million viewers on CBS. In a bizarre coincidence, the Chiefs mirrored the NHL's Florida Panthers, as both teams reached three consecutive championship finals from 2023–2025 and then missed the playoffs entirely the following season.