Nebraska starting center Michael Decker is likely to have surgery this week on a left knee injury and his only chance to play again this season would be a potential bowl game, head coach Mike Riley confirmed. On the Big Ten coaches teleconference Tuesday morning, Riley said he thought the sophomore, who was injured in the first quarter of Saturday night’s game at Purdue, would have surgery Thursday. “I heard so much about so many injuries yesterday,” Riley lamented. “I think he might be able to get back for a bowl game with what they’re going to do.”