Raiders QB Derek Carr suffers concussion, rib injury

Raiders rookie quarterback Derek Carr sustained a concussion and sore ribs in Friday night's preseason win over the Lions, head coach Dennis Allen said after the game, according to ESPN.com's Paul Gutierrez.

Raiders rookie quarterback Derek Carr sustained a concussion and sore ribs in Friday night's preseason win over the Lions, head coach Dennis Allen said after the game, according to ESPN.com's Paul Gutierrez.

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Carr, Oakland's second-round pick out of Fresno State, was injured in the fourth quarter when he was tackled from behind by Lions defensive end Larry Webster, who landed on top of him. Carr immediately grabbed at his ribs after the play.

He finished 9-for-16 passing for 109 yards and a touchdown.

"He has sore ribs," said Allen, "but the concussion is why he came out of the game."

Carr was unavailable after the game, per the league's concussion protocol. He was seen joking with receiver Brice Butler in the locker room, but Carr said "don't make me laugh," according to Gutierrez, as he grabbed at his left side.

- Chris Mascaro