Denver Broncos linebacker Danny Trevathan's season is over after tests revealed a dislocated left kneecap.

It's the third time since August that Trevathan has injured his left knee.

His latest injury occurred in the fourth quarter of Denver's 22-10 win at San Diego. It was his first game since fracturing a bone under the kneecap against the New York Jets on Oct. 12. And that injury came two months after he originally fractured his left leg in training camp.

The news was better on linebacker Brandon Marshall, who sprained his right foot and is expected to be back for the playoffs.

Peyton Manning was still fighting off an illness and getting treatment for a strained quadriceps, which he blamed on dehydration Sunday.

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