Less than a week after being activated from the non-football injury list, Castonzo is once again sidelined after re-injuring his hamstring on Friday.
The Colts recently signed veteran offensive lineman J'Marcus Webb, who should get a shot to fill in at left tackle with the first-team offense while Castonzo is on the mend as the team prepares for preseason action.
Here are other injuries we're monitoring this weekend:
Running back Christian McCaffrey is not practicing Sunday because of an illness, coach Ron Rivera said.
"Reggie was out there and did some stuff. He looked pretty good doing it," Chiefs coach Andy Reid said.
- The New Orleans Saintsreleased wide receiverBrandon Coleman (neck) on a failed physical designation. The move comes after the team signed wide receivers Michael Floyd and Brandon Tate last week. In addition, the Saints waived offensive lineman John Fullington with an injury designation, sources told NFL.com's Herbie Teope.