(Dave Einsel / AP)

Houston Texans linebacker Mario Williams will have surgery to repair a torn pectoral muscle this week and will miss the rest of the season.

Filed at 9:45 a.m.

Houston Texans linebacker Mario Williams has a torn pectoral muscle, an injury that will sideline him for a significant period of time and, possibly, for the rest of the season, according to an ESPN report.

Williams was hurt on a sack of Jason Campbell early in the Texans’ loss to the Oakland Raiders in Houston and was expected to undergo an MRI. He returned to the field in the second half, watching from the sidelines in street clothes.

Typically, pectoral tears are season-ending injuries. We’ll see with Williams, who is having further tests today.