[Kansas City.com] The Chiefs are preparing to play Sunday night’s game at Oakland without left offensive tackle Willie Roaf and defensive tackle Ryan Sims.

Both players left early in Sunday’s season-opening 27-7 win over the Jets with injuries, Roaf with what the Chiefs called a strained hamstring and Sims with a sprained foot.

The Chiefs may also be missing cornerback Patrick Surtain and fullback Tony Richardson. Surtain received a concussion against the Jets while Richardson injured his knee and ankle.

Coach Dick Vermeil suggested both players would be listed as questionable when the Chiefs issue their league-mandated injury report on Wednesday.