In a high-octane showdown, the San Francisco 49ers secured a decisive 42-28 victory over the Arizona Cardinals in Week 3 of the 2026 season. With both teams looking to establish dominance early in the year, the 49ers showcased their offensive firepower, ultimately outlasting their division rivals. Brock Purdy was the standout performer for San Francisco, throwing for an impressive 388 yards and five touchdowns, orchestrating a relentless aerial attack. Complementing Purdy's efforts, Christian McCaffrey delivered a spectacular performance with 196 receiving yards, making crucial catches that kept drives alive and the scoreboard ticking. Meanwhile, Kyler Murray led the Cardinals on the ground with 65 rushing yards, but it wasn’t enough to keep pace with the 49ers’ offensive barrage. Defensively, the Cardinals struggled to contain the 49ers' explosive plays, but Owen Pappoe did make an impact with two sacks. However, the turning point came in the second quarter when Purdy connected with McCaffrey for a 75-yard touchdown, shifting momentum firmly in favor of San Francisco. Despite the Cardinals' attempts to rally, the 49ers' defense held firm, ensuring their victory in this critical divisional matchup.