Ryan Mathews suffers concussion

AP

Chargers running back Ryan Mathews suffered a concussion in Sunday’s game at Oakland, multiple media outlets reported.

According to the NFL Network telecast of the game, Matthews will not return.

Mathews left the game in the second quarter. He rushed three times for eight yards.

Danny Woodhead and Ronnie Brown are the only other Chargers tailbacks on the roster. Both are active.