Notre Dame is feeling the bit of the injury bug at the season's midway point.
Running back Armando Allen didn't dress for Wednesday's practice because of a hip flexor injury, coach Brian Kelly said.
Allen is the team's leading rusher, averaging 74.7 yards per game, and averages 101.5 all-purpose yards this season.
Kelly said Allen will dress for Saturday's home game against Western Michigan, but the coach isn't sure whether the running back will play.
"We've had six rugged games, physical games. We're going to be cautious here going into this weekend with Armando," Kelly said. "He is going to dress, and he is going to want to play. I guess we will have to see what it looks like on Saturday.
"He has already told me that he's got to play. He said, 'Coach, I've only made it through six games.' I didn't know the history. He hasn't gotten to seven games in a season, so this is kind of a milestone for him. He is going to want to play. We just want to be careful with him."
Notre Dame can afford to take a cautious approach with Allen because it is returning another running back to the mix this week.
Jonas Gray, who hasn't played the last two games because of a knee injury, has been cleared to play, Kelly said. Gray will join Cierre Wood and Robert Hughes in the running back rotation.
Right tackle Taylor Dever will be a game-time decision again for the Irish. He didn't play in Saturday's win over Pittsburgh because of a hamstring injury.
Kelly said Dever looked better Wednesday, but he still wants to see more from the tackle.
"He is still not anchored the way I want him on pass rush," Kelly said. "He looks really good in everything right now. We are going to have to see that is not a situation where I'm ready to make a decision on him. He's going to have to show another day. He was better (Wednesday) than (Tuesday), I need to see a little bit more (Thursday)."
Andrew Nuss or Matt Romine will start for the Irish if Dever is unable to play Saturday.
Romine got the nod over Nuss last week because of his experience at tackle, but Kelly said the two are competing again this week for the job.
"We are fortunate that we have two guys there that we feel confident in," Kelly said.