Dennis Georgatos reports Guard Larry Allen was ruled out of Sunday's game after being held out of practice Friday. Nolan said he was hopeful Allen could return next week against San Diego. Allen has been sidelined since spraining the medial collateral ligament in his left knee in the opener at Arizona. He returned to practice Wednesday but felt some soreness in the knee the next day, forcing him to back off. Adam Snyder will start again at left guard in his place.