With Purdy on the sideline due to an elbow injury that he suffered on the first possession of the game, San Francisco turned to fourth-stringer Josh Johnson, but then he got injured in the third quarter (concussion), which left the 49ers down to their emergency quarterback.

With Johnson out, the 49ers put Purdy back in, though he could barely throw due to his injured elbow.

McCaffrey threw one pass, as the depleted 49ers mostly stuck with running plays late in the game.

That was the game where the 49ers had to turn to Jimmy Garoppolo after Trey Lance suffered a broken ankle.

At the time, Juszczyk made it clear that he wanted no part of playing QB.

"I told Jimmy in the locker room, I said 'Hey man, don't make me play quarterback today,'" Juszczyk said following the Week 2 win.