In a commanding performance, the San Francisco 49ers topped the Arizona Cardinals 47-28 in Week 18 of the 2026 season, solidifying their position as a playoff contender. With both teams vying for critical postseason positioning, the 49ers showcased their offensive firepower in a decisive victory. Jared Goff led the charge for San Francisco with three touchdown passes, while Ashton Jeanty provided a strong ground game, racking up 155 rushing yards. Marvin Harrison Jr. was a standout in the receiving corps, amassing 141 yards and creating big plays that kept the Cardinals' defense on its heels throughout the game. Jalen Hurts, despite his impressive performance of 363 passing yards for Arizona, struggled to keep pace with the 49ers' offensive onslaught. Defensively, the 49ers were equally impressive, with Nick Bolton leading the team with seven total tackles and Nick Bosa contributing 1.5 sacks, putting pressure on the Cardinals' quarterback. The turning point came late in the second quarter when Jalen Ramsey snagged an interception, halting a potential scoring drive for Arizona and allowing San Francisco to extend their lead. The combination of offensive efficiency and defensive resilience proved too much for the Cardinals to overcome.