Three things to watch: 49ers at Chargers

Here are three things to watch in the San Diego Chargers’ home preseason game against San Francisco:

Special teams: The San Diego special teams were rotten in the first half of the preseason. It improved in some facets last week. But the team needs to see improvement, especially in the return game.

Tackle race: Veteran Max Starks and youngster Mike Harris are competing to be the swing tackle. Perhaps both will make it, but right now, it seems like Harris, an emergency starter as an undrafted rookie last year, has the edge.

Brad Sorensen: The seventh-round pick has look good in the preseason. He should play a lot in this game. This is his chance to show the Chargers’ brass he has a future as an NFL quarterback.