W2W4: San Francisco 49ers

The San Francisco 49ers (0-2) and San Diego Chargers (1-1) face off in each team's third preseason game Sunday afternoon at Levi's Stadium in Santa Clara, California.

1. The grass: It's a, ahem, sod story that's taken on a life of its own this week. The $1.3 billion Levi's Stadium needed new grass after just one 49ers exhibition game, a San Jose Earthquakes soccer match, a John Legend concert and two and a half public practices by the 49ers. The original Bandera Bermuda blend did not take root properly, and as a result, coach Jim Harbaugh took his team off the field during Wednesday's practice after determining the field was hazardous to his players following several slips and divots. So a new lawn was rolled out Friday -- a deeper cut than the original -- and everyone insists it will hold up Sunday and no players will admit they will be extra careful on it. Stay tuned. How the field holds up in the all-important third preseason game could determine how long the 49ers starters play.

2. Scoring: The 49ers kicked a field goal on their first offensive possession of the preseason and have been shut out since, a stretch of 20 possessions. Sure, starting quarterback Colin Kaepernick has been under center for only three of those drives, including the first, but being outscored by a combined 57-3 should be cause for concern, right? Well, to a man, the 49ers regulars insist all is well, that they just need to get a rhythm going offensively. How long the starters play will go a long way toward establishing said rhythm and determining if there is cause for deeper concern.

3. Who's the backup QB? Blaine Gabbert has left much to be desired in his two appearances as Kaepernick's primary backup, completing 11 of 25 passes for 60 yards and two interceptions with no touchdowns. But it's not as if Josh Johnson or McLeod Bethel-Thompson has lit things up either, the former losing a pair of fumbles and the latter getting picked off twice. Still, Harbaugh said there was no change in the order of the backup quarterbacks, giving the sense that the No. 2 job is truly Gabbert's to lose -- even if that's exactly how he has performed thus far.