The 2023 NFL season, the league's 104th, kicked off on September 7, 2023, with the defending champion Kansas City Chiefs losing to the Detroit Lions, and concluded its regular season on January 7, 2024. The playoffs culminated in Super Bowl LVIII on February 11, 2024, at Allegiant Stadium in Nevada, where the Chiefs defeated the San Francisco 49ers in overtime to become the first team since the 2004 New England Patriots to win back-to-back championships. A remarkable historical note was that all four teams in the AFC North finished with winning records, a feat not achieved by any division since 1935. The league year began on March 15 with a significant salary cap increase to $224.8 million per team, up from $208.2 million in 2022. Free agency saw major player movement, including quarterbacks like Derek Carr (to New Orleans) and Jimmy Garoppolo (to Las Vegas), as well as star receivers Odell Beckham Jr. and DeAndre Hopkins switching teams. This season was defined by high-profile roster reshuffling across all positions, setting the stage for one of the most competitive playoff races in recent memory.