In a decisive matchup, the San Francisco 49ers topped the Pittsburgh Steelers 23-12 in Week 4 of the 2027 season. The victory keeps the 49ers firmly in the hunt for a playoff spot, showcasing their offensive firepower against a struggling Steelers team. Brock Purdy led the charge for San Francisco, throwing for 195 yards and three touchdowns, making him the standout performer of the game. Christian McCaffrey contributed significantly on the ground with 93 rushing yards, while George Kittle was a reliable target, racking up 73 receiving yards. This offensive trio effectively orchestrated the 49ers' scoring efforts, putting pressure on the Steelers' defense throughout the game. Defensively, San Francisco was bolstered by Renardo Green, who notched an interception that shifted momentum in favor of the 49ers. The turning point came late in the second quarter when Purdy connected with Kittle for a touchdown, expanding their lead to 20-6 and forcing the Steelers to play catch-up. Despite Derrick Harmon's two sacks for Pittsburgh, the 49ers' defense held strong, limiting the Steelers' offensive production and sealing the victory.