Warren rejoined his teammates on the sideline without a helmet after suffering an apparent groin injury during Wednesday's practice, Stephen Holder of ESPN.com reports.
Warren went down after a pass play and was favoring his right groin as he limped off the field with a member of the Colts' training staff. He still had a slight limp as he returned to the sideline, per Kevin Bowen of 107.5 The Fan Indianapolis, and Warren's lack of helmet and presence of a wrap around his right groin (according to James Boyd of The Athletic) indicate the second-year tight end won't mix into any more drills Wednesday.