Lederman, a 6-7, 305-pound redshirt junior from Brodhead, Wis., suffered a fractured toe on his right foot against North Carolina. On Monday morning, he underwent surgery performed by Dr. Tee Moorman and Dr. Mark Easley of the Duke Sports Medicine Center. In 2009, Lederman played in nine games with seven starting assignments at left guard.
Renfree, a 6-3, 210-pound redshirt freshman from Scottsdale, Ariz., suffered a torn anterior cruciate ligament in his right knee this past week against Georgia Tech and will have surgery performed by Moorman at a later date. As Duke's top reserve at quarterback, Renfree appeared in five games this year and completed 34-of-50 (.680) pass attempts for 330 yards with four touchdowns and two interceptions. His best game came at Army in week two, coming off the bench to hit on seven-of-eight passes for 106 yards and two touchdowns in Duke's 35-19 come-from-behind victory.