Martin (hamstring) has been ruled out for Sunday's game in San Francisco.
Martin was seemingly on track to practice for the first time since he injured his hamstring in Week 2, but he then suffered a setback at some point last week, leaving him without a clear timetable to return. With Charles Sims (knee) also out of the picture, Jacquizz Rodgers is set to handle a heavy three-down workload in Sunday's favorable matchup against the leaky San Francisco run defense. Peyton Barber and Antone Smith will provide depth.
McDonald (hamstring) will not play against the 49ers on Sunday.
McDonald was able to return to practice after sitting out on Wednesday, but will be held out due to the lingering nature of hamstring injuries. However, he appears to have an optimistic chance of returning next week. Akeem Spence will get the start on Sunday as his replacement.
Shorts (hamstring) is listed as questionable for Sunday's game against the 49ers.
Shorts has been sidelined since Week 2 due to a hamstring ailment, but that problem looks to be behind him given his increased activity level this week. If Shorts is indeed able to return Sunday, his matchup with the 49ers and teammate Vincent Jackson's (knee) absence could help him improve on his lone catch for 12 yards this season.
James (undisclosed) reached an injury settlement with the Buccaneers on Wednesday, ESPN reports.
Following a three-year stint with the Bucs, the team decided to part ways with James due to a vague injury he can't seem to overcome. In the wake of his release, Tampa Bay promoted rookie Peyton Barber from the practice squad and plucked Jacquizz Rodgers off the free agent market.
Bell (concussion) reached an injury settlement with the Buccaneers on Thursday, Aaron Wilson of the Houston Chronicle reports.
Bell suffered a concussion in Week 4's preseason finale against the Redskins, leaving him on the sidelines for an extended amount of time. The team decided to part ways with wideout instead of holding him on IR for the year.