The Tampa Bay Buccaneers have their starters pretty much set in stone at the offensive tackle position: Donald Penn on the left side, and Jeremy Trueblood on the right side. The Bucs don't have real competition for either player, which makes that a foregone conclusion. That's not a huge problem on the left side, as Penn is an above average left tackle. The only issue there is that Penn is currently sidelined with a calf injury, but he's expected to be ready in time for the regular season. Trueblood presents a bigger problem, specifically as a pass protector, but he is the best option the team has at right tackle.
Behind those two, Demar Dotson appears to be the main backup. Dotson is physically talented, but has very little experience actually playing football, having played all of one year of football in college - as a defensive lineman. Dotson looked okay on the right side last year and was repeatedly used a sixth lineman in run-heavy situations. He's currently taking first-team reps at left tackle because of Penn's injury, but may be a better fit on the right side in the end.
Behind Dotson, we have Jamon Meredith, a journeyman free agent who was signed by the team this offseason. Meredith has almost no playing experience and couldn't even get on the field for the Steelers last year, despite numerous injuries along the offensive line. He's unlikely to do much this year, or any year for that matter. After Meredith we come to a bunch of undrafted free agents in their first or second year in the NFL: Jermarcus Hardrick, Mike Ingersoll, Bradley Sowell and Mike VanDerMeulen. None of them appear to be standing out in camp, so none of them are likely to make the team.
Likely regular season roster: Donald Penn, Jeremy Trueblood, Demar Dotson