One of Ohio State’s top players, receiver Jaxon Smith-Njigba, is dealing with an injury and is questionable to return.

Smith-Njigba suffered a knee/hamstring injury on an awkward tackle in the first quarter against Notre Dame. It was a 4-yard reception and he has not re-entered the game.

ESPN’s Holly Rowe reported his left leg got “rolled up” on the play. He’s since been working on an exercise bike on Ohio State’s sideline as trainers try to get him healthy enough to re-enter the game.

“Right now this does not look promising for him to feel comfortable enough to return to this game,” Rowe said.

Here’s a clip of Rowe’s report and a replay of the play in question:

Smith-Njigba is Ohio State’s most explosive wide receiver. Last season, while playing partially in the shadow of Garrett Wilson and Chris Olave, he totaled 95 catches for 1,606 yards and 9 touchdowns.

If he’s unable to return to the game, it could have a significant impact on the outcome.

Notre Dame was a 16-point underdog in this contest as of Saturday morning.

Update: Smith-Njigba re-entered the game for Notre Dame with less than 3 minutes remaining in the second quarter. He caught 1 pass immediately upon returning to the game, but was tackled for a loss.