Nix has undergone surgery to repair a torn meniscus as the Fighting Irish prepare to take on BYU.
Nix has been banged up this season. He missed a game against Air Force due to tendonitis and a shoulder injury was suffered in a game against USC.
This is a big blow to the Irish defense as they'll have to go against a BYU team that has been solid on the ground this season.
Nix is expected to be a high draft pick in the 2014 NFL Draft. Getting surgery now rather than waiting until after the season will give him more time to rehab and prepare for the NFL Draft. It would make sense to get it taken care of now with the Irish not competing for any big bowl game or championship and Nix still in position to be drafted highly if he is in optimum shape.
That all depends if he decides to come back to school for the 2014 season.