The 49ers moved to 4-0 on the season with a 35-16 win over the Arizona Cardinals at Levi’s Stadium. Here are their grades for this win.
Quarterback: A+
Brock Purdy was nearly perfect while running his career record to 9-0. Purdy completed 20 of 21 passes for 283 yards and one touchdown. He also scored a touchdown on a sneak to cap off the scoring. Purdy was completely in command of the 49ers offense. He hit Brandon Aiyuk with three deep shots. Kyle Shanahan showed his confidence in Purdy when he called for a pass on fourth and four in the first quarter.