What happened: Klay Kubiak highlighted the guards' explosiveness and continued improvement. He also praised young players' preseason performances while discussing internal competition.
Why it matters: The finale offers fringe candidates their last live audition before San Francisco settles its initial roster. Decisions at guard will help define the offense's depth entering Week 1.
By the numbers: NFL teams must reduce rosters from as many as 90 players to 53 by 6 p.m. ET Sunday.
What to watch: Watch which guards receive the final-game snaps and how San Francisco allocates its reserve offensive-line spots.