Notre Dame could be without one of its starting defensive linemen when the No. 22 Irish (2-1) play host to Michigan State (3-0) on Saturday.
Coach Brian Kelly told reporters after Thursday's practice that Sheldon Day, a 6-foot-2, 290-pound sophomore defensive end, will be a game-time decision against the Spartans.
Day sprained his ankle in last week's 31-24 win over Purdue and was wearing a walking boot Tuesday. He practiced for the first time this week Thursday, Kelly said.
"He can play Saturday," Kelly said. "We'll see. He obviously missed Tuesday and Wednesday, but he's available to us. We'll see how he responds. He practiced today, looked pretty good."
Day has seven tackles with one for loss in three games.
If Day cannot play Saturday, the Irish will likely turn to sophomore Jaron Jones and freshman Isaac Rochell first to fill his spot. Notre Dame began the year missing one defensive lineman when former Bishop Dwenger standout Tony Springmann was lost for the season to a knee injury.
Rochell has three tackles in three games, and Jones hasn't recorded a tackle in two games but did block a kick.
"A little bit of everybody," Kelly said of replacing Day. "All hands on deck."