49ers-Seahawks injury report: Marcus Martin returns to practice

The San Francisco 49ers released their Thursday practice participation report, and there is a little bit of good news. The team welcomed Marcus Martin back to practice. He was listed as limited, a day after sitting out practice with his knee injury. He injured the knee on Sunday, but it would appear it is not too much of an issue. I'm trying to find out if it's the same knee he previously dislocated.

If Martin ends up unable to play, Joe Looney would start in his place, and Dillon Farrell would be the primary backup. However, if Martin can go, the 49ers could roll out their primary offensive line for the first time in a while. The team has rolled through numerous offensive line rotations. Anthony Davis has been the primary absence, but they've seen injuries across the line. Davis was a limited participant on Thursday, and has a chance to play on Sunday if he can finish the concussion protocol.

Other than that, there are no changes to the report. Justin Smith will be back at practice on Friday, as he is getting two practice days to rest up each week. Tramaine Brock is listed as limited again, and I would be surprised if he played on Sunday. Vic Fangio said he has a slight chance, but given how little he has practiced lately, I suspect the team will prefer to let him shake off more rust.

49ers injury report

STATUS DEFINITIONS:

BOLD-Indicates change in status

Out - player definitely will not play
Doubtful - at least 75% chance player will not play
Questionable - 50-50 chance player will not play
Probable - virtual certainty player will be available for normal duty