OAKLAND, Calif. >> Oakland Raiders quarterback Derek Carr has left the opener against Cincinnati with an undisclosed injury.

Carr got hurt scrambling for 9 yards in the second quarter Sunday against the Cincinnati Bengals. He was hit near the sideline by Adam Jones and the ball popped loose and went out of bounds.

Carr was tended to by the trainers on the sideline for a few moments before going to the locker room. There is no immediate word on his condition.

Matt McGloin replaced Carr, but the Raiders were stopped on fourth-and-1 on the next play when Latavius Murray was held to no gain.

The Raiders also lost safety Nate Allen to a knee injury. The team said he will not return.