Raiders' Trayvon Mullen: Undergoing surgery

Mullen (undisclosed) is expected to undergo minor surgery, Vic Tafur of The Athletic reports.

Mullen played in five games last season, missing the majority of the year with a toe injury. After spending nine weeks on IR, Mullen attempted to return in Week 14 against Kansas City, but he aggravated the injury and was shut down for the rest of the season. With little known about the injury or the surgery that is taking place, a recovery time for Mullen is not yet known.