Along the way, Harbaugh’s offense asked Justin Herbert to attempt 41 passes behind an offensive line that lost Joe Alt to injury. Behind a line, too, that entered without starters Rashawn Slater and Mekhi Becton.

Offensive tackle Joe Alt is undergoing testing after hurting his ankle in a 21-18 loss to the New York Giants on Sunday. Coach Jim Harbaugh did not provide details about the injury, which is reportedly a high ankle sprain.