Buccaneers' Doug Martin doubtful Sunday vs. Browns

Tampa Bay Buccaneers running back Doug Martin has been ruled doubtful to play Sunday against the Cleveland Browns after an ankle injury forced him to miss his third consecutive day of practice Friday.

The missed practice time and doubtful designation make it unlikely Martin will suit up, opening the door for both Bobby Rainey and Charles Sims to see significant carries.

Either way, the Buccaneers' entire running game faces a favorable matchup against a Browns defense that has been among the NFL's worst in stopping the run to this point.