Ohio State coach Urban Meyer will make game-day decisions on whether quarterback J.T. Barrett starts and how much he plays in the Big Ten title game after confirming the senior underwent arthroscopic knee surgery Sunday. Barrett aggravated a right knee injury when he was struck on the sideline during last Saturday's game at Michigan. He fully participated in practice Thursday and is cleared for Saturday night's game against No. 4 Wisconsin. On Friday, Meyer called Barrett's health situation "delicate" and said the coaches will determine in the next 24 hours how much the quarterback can run the ball against the Badgers. Barrett has 672 rushing yards and nine touchdowns on 130 carries this season. Meyer called Barrett's progress during a week of treatment as "very positive." "That's not normal," Meyer said of Barrett's recovery. "It takes a rare individual because there is a pain threshold. When you're talking about 15 hours a day of treatment, which is what he did, I can't say that's normal. I've had players who had similar things happen who are out two, three weeks."