Mack (shoulder) was a limited participant at Wednesday's practice.
The injury didn't necessarily contribute to Mack's reduced workload in Sunday's loss to Arizona, as most of his Week 1 touches came in the second half of a blowout. Even if Mack is relatively healthy, Sunday's matchup against the Browns should be a competitive game, which would be more favorable to the likes of Frank Gore and Robert Turbin. However, the Colts may want to give Mack an extended look at some point, considering they're already shaping up as a long shot to compete for a playoff spot.