Quinn leaves game with head injury, Cassel back in

AP

The Brady Quinn era didn’t last long.

After throwing an interception earlier, Quinn’s out in Kansas City, after taking a hard shot on a sack. He’s been taken to the locker room with what was described as a head injury.

The Chiefs threw for minus-six yards in the first quarter, part of their 17 total yards.

Matt Cassel is now back in the game, and there was no cheering when it happened.

The Raiders are up 6-0 early in the second quarter on a pair of Sebastian Janikowski field goals.