Miami Dolphins coach Joe Philbin declined to help hype the possible all-rookie showdown Sunday between quarterbacks Andrew Luck and Ryan Tannehill.
''I don't think it's really a big deal,'' Philbin said.
The coach's enthusiasm might have been tempered by the possibility Tannehill won't play against the Indianapolis Colts. He left Sunday's victory over the New York Jets in the first quarter with left knee and thigh injuries, and practiced on a limited basis Wednesday.
Tannehill wore a brace and thigh-to-ankle sleeve on his left leg. He participated in passing drills, but backup Matt Moore took the snaps with the starters at the beginning of team drills, while Pat Devlin worked with the second team.
Tannehill was cleared to practice after undergoing an MRI exam. He declined to predict whether he'll be able to play Sunday.
''I'm just taking it one day at a time,'' he said. ''I'm going to do everything I can to...