Brock Purdy has thrown 13 passing touchdowns through five games for the undefeated 49ers, leading all qualified quarterbacks while posting a 119.3 passer rating and just two interceptions. The Shanahan offense has generated high efficiency with additions like Mike Evans and Brandin Cooks alongside Christian McCaffrey, though injuries have sidelined or limited receivers including Christian Kirk, Ricky Pearsall, and Deebo Samuel. Purdy has avoided sacks and turnovers at an elite rate early, but the 49ers face a demanding remaining schedule and ongoing roster attrition on both sides of the ball. His prior season was cut short by shoulder and toe issues, underscoring durability questions over a full 17-game slate. Trader sentiment reflects this strong start tempered by injury risk and volume sustainability.