In a thrilling Week 3 matchup, the San Francisco 49ers narrowly defeated the Arizona Cardinals with a final score of 31-24. This victory keeps the 49ers firmly in the playoff hunt as they continue to build momentum in the 2026 season. Carson Beck was the standout performer for the Cardinals, throwing for 297 yards and three touchdowns, showcasing his prowess in the pocket. However, it was Christian McCaffrey's explosive performance on the ground that proved crucial for the 49ers, as he racked up 148 rushing yards, consistently moving the chains and setting the tone for San Francisco's offense. Marvin Harrison Jr. also made a significant impact for Arizona, leading all receivers with 199 yards, but it wasn’t enough to overcome the 49ers. Defensively, the 49ers made key plays to secure their victory, highlighted by Deommodore Lenoir's interception that shifted momentum in the second half. Dre Greenlaw led the charge with eight total tackles, providing a steady presence against the Cardinals' offense. The game's turning point came late in the fourth quarter when Lenoir’s pick halted a promising Arizona drive, allowing San Francisco to maintain their lead and ultimately seal the win.