Kilmarnock defender Frazer Wright has accused Celtic's Morten Rasmussen of deliberately elbowing him in their Scottish Cup clash.
The incident came in the first half of Saturday's quarter-final, which Celtic won courtesy of Robbie Keane's second-half hat-trick.
The 30-year-old needed stitches in the head wound, although referee Iain Brines and his assistants missed the flashpoint.
Wright insists television replays of the incident prove Ramsussen's guilt and hopes the SFA look into the clash and punish the Dane.
"He swung an elbow at me," explained Wright. "I wasn't happy about it but he just said he was trying to get free from me.
"I asked Sky's David Tanner about it when we came off at half-time after someone else said the telly showed it was quite obvious he had done it.
"He said, 'You shouldn't be close to me', so I said, 'Sure, I'll let you stand and score.' He definitely caught me.
"If he meant to do it, it's not very nice. Hopefully it's something which will be looked at.
"I think if it was one of us who had done the same thing it would be picked up on.
"Someone has to have a look at it. If TV pictures prove he's done it then I'm all for him being done, he did catch me."