The Football Association will launch an investigation after a Stevenage player was punched by a fan while celebrating tonight's shock FA Cup victory against Newcastle.
Defender Scott Laird was floored by the blow following the final whistle as the League Two side celebrated their 3-1 win over their Premier League opposition.
Stevenage manager Graham Westley confirmed that Laird had been poleaxed by the blow in an incident which marred the most glorious night in their history.
Westley said: "Scott Laird was stood celebrating with the fans and a fan just came over and smashed him from the side. He went to the ground and it is a shame for the afternoon to end in that way.
"He is a bit bewildered. He [the fan] gave him a right-hander, just smashed him across the cheek and knocked him to the ground.
"He said to me, 'It's lucky I've got a big head to take it'. It was a sad way for things to end."
A video of the incident was swiftly posted on the interne and the FA are certain to study the evidence next week.
An FA spokesman said: "It's something that should be flagged up in our meeting on Monday. It might be that there was a stadium adviser at the game who'll be able to advise us on that."
Westley, however, was more concerned in ensuring that his players got the credit for one of the great FA Cup performances.
He said: "It's not my business to deal with those matters. It's in other people's hands.
"Look, Mark Roberts had his nose busted in the first half. Footballers take bangs, they take knocks. You can't suggest that is the right way for a football match to end with those things going on but balls get thrown at people, players get kicked, tackles get made.
"We're not people who spend our lives griping about bangs and knocks. I don't think it's the way things should be conducted, but let's leave it at that.
"I wouldn't want it to take the gloss off the players because they have put in a fantastic shift and the focus should be on the performance they have put in."
Stevenage's chairman, Phil Wallace, said the club has launched an investigation into the attack. "This person seemed intent on making a random assault on a Stevenage player after a fantastic victory," he said. "This is disgraceful behaviour and we will do everything we can to ensure that the assailant is brought to justice and prosecuted."
"Recognition should not be difficult as the video images of him are crystal clear. This time it was a fist, who knows what it could be next time? We do everything we can as a club to prevent this type of incident and follow all the recommended procedures.
"But it seems this lad has set out to disguise his intent so that he can cause physical harm to one of our players and we will work with police tirelessly until this person is identified and prosecuted."
The Newcastle manager, Alan Pardew, said he was not aware of the incident.