Wigan striker Callum McManaman could be facing retrospective action by the FA after his horror tackle marred the Latics' crucial 2-1 win over Newcastle.
The 21 year old, on his full Premier League debut, lunged into a knee-high challenge on Newcastle substitute Massadio Haidara, which left his opponent writhing in agony.
McManaman's over-zealous challenge did clip the ball but he followed through to smash into the kneecap of Haidara, who had only come on minutes earlier for hamstring victim Mathieu Debuchy.
He escaped punishment, with referee Mark Halsey later admitting he was unsighted. However, he did send off the furious Newcastle assistant manager John Carver - who twice had to be restrained as he tried to confront McManaman at the end of the first half - and Wigan coach Graham Barrow in an unseemly fracas.
The incident adversely affected the game as from the moment Haidara was carried off on a stretcher the mood changed significantly.
Jean Beasejour's first-half goal had been cancelled by United's Davide Santon with 18 minutes to go only for Arouna Kone to snatch a vital close-range goal for Wigan in a goalmouth scramble in which the ball appeared to come off team-mate Maynor Figueroa's hand.
Halsey's half-time whistle prompted a commotion on the touchline as Carver went for McManaman with Barrow also piling into the fray in defence of his player.
Both were sent to the stands for the second half but McManaman continued to be at the centre of everything as, just before his 58th-minute withdrawal, he had a chance to make it 2-0 but his shot was blocked by Mapou Yanga-Mbiwa.
By that time Haidara was already on his way back to hospital for the extent of his injury to be assessed as soon as possible.
The victory was crucial for third-bottom Wigan, whose match in hand is at Manchester City, as both Aston Villa and Southampton won at the weekend.
Their survival, though, will not be the talking point with the immediate repercussions from the game likely to be discussed in the corridors of the FA.