Colts LT Castonzo leaves loss with knee injury

INDIANAPOLIS — Colts starting left tackle Anthony Castonzo left Sunday’s 45-26 loss to the Tennessee Titans early in the second quarter with a knee injury.

“I don’t think it’s the worst-case scenario,” Colts coach Frank Reich said after the game when asked about Castonzo’s injury.

It’s uncertain when Castonzo was injured because he completed the previous series without needing help from the training staff on the field.