Andre Johnson admitted his last few years with the Texans were "frustrating," and he feels rejuvenated with the Colts.
The Colts are giving fourth-round S Clayton Geathers first-team reps at OTAs.
Colts signed No. 29 overall pick WR Phillip Dorsett to a four-year contract.
Colts signed CB Chance Casey and G Will Corbin.
Colts LG Donald Thomas (torn quad) is not expected back until training camp.
ESPN Colts reporter Mike Wells considers the team's No. 3 receiver job an open competition between Donte Moncrief, Phillip Dorsett, Duron Carter, and Vincent Brown.
ESPN Colts reporter Mike Wells says it was "pretty obvious" during Wednesday's OTA session that Andre Johnson will "have a significant" role this season.
According to the Indianapolis Star, first-round pick Phillip Dorsett is "already flashing in practices."
Colts OL Jack Mewhort has been working at right tackle during OTAs.
When asked about his chances heading into training camp, Vick Ballard said "this could be it for me."
Colts OLB Robert Mathis (Achilles) remains without a timetable to return.
Khaled Holmes and Jonotthan Harrison have been splitting reps at center for the Colts this offseason.
Dwayne Allen missed the Colts offseason conditioning program due to an ankle injury.
Colts OC Pep Hamilton said first-round WR Phillip Dorsett can "absolutely" have an immediate impact.
Dwayne Allen said Wednesday he only played at around 70-percent health last season.