In a hard-fought battle at Arrowhead Stadium, the Kansas City Chiefs narrowly defeated the San Francisco 49ers 17-13 in Week 16 of the 2026 season. Both teams came into the game with playoff implications on the line, but it was the Chiefs who emerged victorious, solidifying their postseason aspirations. Patrick Mahomes was the star for Kansas City, throwing for two touchdowns and helping keep the offense efficient throughout the contest. Brock Purdy of the 49ers led the game in passing yards with 250, but it was Mahomes' timely throws that made the difference. Christian McCaffrey added a solid ground game for San Francisco, racking up 72 rushing yards, while Mike Evans showcased his receiving skills with 89 yards through the air. Defensively, the Chiefs made crucial plays that turned the tide in their favor. L'Jarius Sneed led the team with eight tackles, while Chris Jones applied consistent pressure, recording two sacks that disrupted Purdy's rhythm. The turning point came late in the fourth quarter when Jones' second sack forced a pivotal fumble, allowing Kansas City to regain possession and ultimately seal the victory.