There are very few positions where the Miami Dolphins still have question marks in their starting lineup, but offensive guard is one of them, and there's someone available on the free-agent market who can help give them an answer.
Veteran guard Donald Thomas is no stranger to the Dolphins franchise; he was drafted by the Dolphins in the sixth round back in 2008 and spent two years of his career with Miami. That was well before Joe Philbin took the head coaching job in 2012, back when Tony Sparano was still running the show and when Jeff Ireland was still calling the shots as general manager.