He took a bad fall and landed on his back in the second half. There was another time when he was fouled and I think the OSU player stepped on his foot and it looked like it might be bothering him.
He landed right on his tailbone after blocking a shot off the glass in the second half. He had to sit out a few minutes. After he returned, he was favoring his left leg after the fall.
To me it looked like he was sore and hurting but not really injured. I suspect he will be stiff for a couple of days but I suspect he will be fine by Saturday. He is young and will get excellent treatment so hopefully it will not be an issue.