LOS ANGELES — Michigan left guard Trevor Keegan sat on the training table outside the team’s locker room at the Rose Bowl, still in uniform, long after the Wolverines advanced to the national championship game with an overtime win against Alabama on New Year’s Day. The heavy taping on his feet and arms was sliced off, and in the aftermath of Michigan’s 27-20 comeback victory, Keegan said he couldn’t find the words to describe his emotions. “Our guys, they’ve worked their whole lives for this moment,” Keegan said. “We came into this game, nobody was nervous. We were excited.” Now, it’s all abou…