Colts left guard Donald Thomas has been carted off the field with a knee injury early in their game against Miami. Thomas appeared to clutch his right knee on a play on which Andrew Luck threw a 22-yard pass to T.Y. Hilton. The 6-foot-3, 334-pound offensive lineman stayed down several minutes Sunday before he was taken off the field on a cart. Colts officials say he will not return. The severity of the injury was not immediately clear. Source: Associated Press