Fulham manager Chris Coleman has called for the "coward" who hit Claus Jensen on the head with a coin to be jailed.
Just minutes after Jensen had hit the 66th-minute goal to defeat Everton 1-0 at Craven Cottage the Dane was struck by a missile thrown from the stand behind the goal.
Coleman said: "It's bitterly disappointing this sort of thing.
"Generally the behaviour of football fans around the country has got a hell of a lot better but there is no excuse for that absolute nonsense.
"It was a coward who decided to throw a coin. Get him out, send him to prison or somewhere away from football.
"I think he will be identified - I hope he will."
Everton manager David Moyes was quick to echo Coleman's sentiments - although he insisted it had not yet been proven that a Toffees fan was responsible.
He said: "Behind that goal today were mixed supporters of both Everton and Fulham, which was great to see. It's unsavoury when that happens but it was a mixed end wasn't it?
"If someone did that then I agree they should be banned but you have got to accept there is as much chance of it being a Fulham supporter.
"He could have been aiming somewhere else. It could have been another player he was trying to hit."
(Ed: Moyes attempts to mislead as Jensen was in fact taking a corner at the time in front of the away fans section, not in front of the goal. The Sky pictures show a sea of blue behind Jensen)
Moyes was also convinced Jensen would not have scored had his shot not taken a deflection off Lee Carsley.
He said: "It wouldn't have gone in. And it wasn't a fair result, of course it wasn't."
Everton were convinced they should have been awarded a penalty in each half with England striker Andrew Johnson the man in question on both occasion.
Coleman did not agree about the first decision. He said: "I didn't think it was a penalty. It was clever play by Andy Johnson.
"Pearce went to tackle him and changed his mind. Johnson looks for a penalty at times."
Moyes hit back: "The people who work with him will tell you he is as honest as the day is long."