Why: The unit was "pushed around" in the words of coach Jim Harbaugh. While there were nice individual moments, the defense struggled through the game.
Is it a concern? Not as far as the first unit is concerned, as the 49ers were playing without seven starters. Many who will not play much did so against first-team competition, and many who played extensively wore down. This was just one of those preseason things in my opinion.
Why: He was pretty bad all game. He completed 5 of 15 passes for 44 yards and was intercepted once. He never looked comfortable.
Is it a concern? Yes. It can't be denied that Gabbert played poorly. Unless Gabbert -- acquired in March from Jacksonville -- is a complete bust in the rest of the preseason, I don't see him losing his grip on the backup job. He is guaranteed $2 million, and neither Josh Johnson nor McLeod Bethel-Thompson are ready to be the backup.
Why: It got pushed around. The unit is like the defense. Two backups are starting. Right guard Joe Looney got knocked around.
Is it a concern? It could be. Looney is not at the level of Alex Boone, who is holding out. Boone's holdout has the potential to linger. Add the fact that right tackle Anthony Davis (recovering from a shoulder surgery) won't play until Week 1 and center Daniel Kilgore is a first-year starter, there is potentially rocky times ahead on this unit, which has been solid. I do think everything will sort itself out early in the regular season, but getting Boone back is a key.