Report: Chargers RB Ryan Mathews could miss 4-5 weeks with MCL sprain

San Diego Chargers running back Ryan Mathews has been diagnosed with a sprained MCL, and could miss 4-5 weeks.

San Diego Chargers running back Ryan Mathews has been diagnosed with a sprained MCL and could miss 4-5 weeks, NFL.com's Ian Rapoport reports.

Mathews, 26, was carted off the field during the fourth quarter of the Chargers' 30-21 victory over the Seattle Seahawks on Sunday. He was injured while recovering a fumble.

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He had 11 carries for 31 yards and two catches for 26 yards before the injury.

The fifth-year running back had 1,255 rushing yards and six touchdowns last season for the Chargers. He has missed 10 games in his NFL career.

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- Paul Palladino