Shaun O'Hara walked out of Giants Stadium without crutches or a brace on his sprained left knee and said he felt OK though he didn't know what shape he'd be in for next weekend's playoff game at Tampa Bay. It is believed that O'Hara suffered an injury to the medial collateral ligament in his left knee. O'Hara told Newsday that he is scheduled for an MRI exam today after his left knee buckled in the second quarter when teammate David Diehl was driven into O'Hara by Patriots' linebacker Adalius Thomas. Grey Ruegamer replaced O'Hara at center. The Giants also lost linebacker Kawika Mitchell to a sprained knee in the first quarter and cornerback Sam Madison to an abdominal strain in the fourth quarter. Madison said after the game he was not seriously hurt. Tom Coughlin singled out Gerris Wilkinson for praise after Wilkinson replaced Mitchell.