49ers Film Room: Breakdown and analysis of San Francisco 49ers QB Jimmy Garoppolo’s first game action after knee surgery, with a focus on the Niners’ backup offensive linemen.

In this play, we analyze Garoppolo’s final pass of the game, a screen pass to RB Matt Breida. The 49ers’ franchise QB Jimmy Garoppolo compiled a QB rating of zero against the Denver Broncos in Week 2 of the preseason. Here’s why the 49ers’ backup offensive linemen — specifically Ben Garland — shoulder much of the blame for Garoppolo’s rough return to action.