Key (hamstring) has been ruled out for the Colts' matchup with Pittsburgh in Week 5, James Boyd of The Athletic reports.
Key suffered a hamstring injury during Sunday's win over Washington, and he's set to "miss some time," according to manager Shane Steichen. In his absence, JT Tuimoloau and Caden Curry will stand to see an increase in opportunities on the defensive line versus the Steelers in Week 5.