The Raiders expect Mariota to miss multiple weeks after he aggravated an existing quadriceps injury in Monday's 33-27 overtime win over the Ravens, Ian Rapoport of NFL Network reports.
Mariota picked up the injury on a 31-yard run on what proved to be his lone play of the game in the season opener. While Derek Carr is secure as Las Vegas' No. 1 quarterback, head coach Jon Gruden had planned to make use of Mariota's running ability in a few packages per game, so the signal-caller's expected absence will rob the Raiders of a dynamic weapon. Nathan Peterson will step in as the top understudy to Carr for however long Mariota is sidelined.