Seymour, the 12-year pro, has played in only eight of the Raiders' 14 games this year, and he hasn't seen a snap since the Nov. 4 game against the Tampa Bay Buccaneers while dealing with a knee and hamstring issue. Seymour appeared to be recovering and was limited in practice a little more than a week ago, but he did not play in Sunday's 15-0 win against the Kansas City Chiefs.
Branch played against the Chiefs and had four tackles, but an ankle injury suffered a few weeks ago had him back on the sideline on Wednesday and Thursday. He has 92 tackles on the season.
Defensive back Phillip Adams (concussion), tackle Khalif Barnes (triceps), receiver Juron Criner (hip), tight end Richard Gordon (biceps) and safety Mike Mitchell (neck) were all limited on Wednesday and again on Thursday.