Philip Rivers injured his right foot on Sunday, making the San Diego Chargers grateful for their first-round bye in the playoffs and time off for their banged-up quarterback.

Rivers was hurt when he was sacked by Arizona's Chike Okeafor late in the first quarter of San Diego's 27-20 win over Arizona. He left for a play, then returned and threw two touchdown passes before being pulled in the third quarter.

Rivers, who pulled up and limped each time he threw a pass, finally came out after some high-level huddling on the sideline that included coach Marty Schottenheimer, trainer James Collins, Dr. David Chao, offensive coordinator Cam Cameron, backup QB Billy Volek and third-stringer Charlie Whitehurst.

Kansas City's Trent Green was also hurt, spraining an ankle in the third quarter against Jacksonville. He missed one series but returned late in the quarter.

In Tennessee, the Patriots were upset about an injury to their strong safety and defensive leader, Rodney Harrison. Harrison hurt his right leg when blocked in the second quarter against the Tennessee Titans and didn't return.

Harrison went to the ground and slapped the turf after being blocked by Titans receiver Bobby Wade, whose helmet appeared to hit Harrison's right knee in a low block. He walked off the field on his own.

Patriots linebacker Rosevelt Colvin said it was unnecessary and hopes Harrison can return for the wild-card playoff game against the Jets.

Another playoff-bound team, Seattle, lost starting cornerback Kelly Herndon, who broke his leg against Tampa Bay.