Steelers’ Rainey, Colts’ Collie and Redding leave with injuries

This is turning into a worst-case scenario first quarter, as three players have been taken in with injuries already. Colts receiver Austin Collie was taken in after taking a shot to the head from Steelers linebacker Larry Foote. Collie has a history of concussion problems, making his an immediate concern. Steelers running back Chris Rainey…