Brock Purdy vs. Cardinals posted 4th highest single-game completion rate in NFL history

Brock Purdy’s 20-for-21 performance vs. the Cardinals gave him one of the best completion rates ever.

49ers quarterback Brock Purdy struggled out of the gates in Week 3. He flipped that script and came out hot in Week 4, completing all five of his first-half throw. That streak continued throughout Sunday’s game with his lone incompletion coming in the third quarter.

Purdy completed 20-of-21 throws for a completion rate of 95.23 percent. It was one of the best single-game performances of all-time for QBs with 20-plus throws in a game.

Here are the top-four such performances in NFL history: