A review of Thursday 49ers practice reports (linked below) indicate that Shawntae Spencer remained out of practice once again with his left hamstring issue. Carlos Rogers was back practicing in a no-pads workout and did not seem certain that he would play on Saturday due to an Achilles strain.
The team has dealt with a variety of bumps and bruises through camp, but the cornerback position has dealt with one of more pertinent injuries as Shawntae Spencer's absence has resulted in significant practice and playing time boosts for the backups.
Tramaine Brock worked his way into the starting lineup last week, and I wouldn't be surprised if we saw him starting again this weekend. If both Rogers and Spencer sit out Saturday's game, I'm not sure whether Tarell Brown or Chris Culliver would get the start. I haven't heard anything particularly negative about either, but it wouldn't surprise me if the 49ers continued lining up Culliver in that starting nickel role before rotating him as a second team left or right cornerback.
If Rogers and Spencer are both out, this could be an opportunity for one of those three to make a big splash. I have left out Phillip Adams thus far in part because it's hard to figure out where he stands on the depth chart.
This weekend's game against the Raiders could prove interesting because while the Raiders do have some question marks, wide receivers Jacoby Ford and Denarius Moore could prove to be strong challenges for the 49ers cornerbacks. Ford and Moore are young but both are immensely talented and cannot be taken lightly on Saturday. Ford showed how big a playmaker he could be in the second half of last season and whispers out of training camp are that Moore is proving just as explosive.