Anthony Gordon's discomfort at the hands of a Newcastle physio caused a stir among fans watching the Magpies Premier League clash at Chelsea.
Eddie Howe's side suffered a 3-2 defeat at Stamford Bridge as goals from Nicolas Jackson, Cole Palmer and Mykhailo Mudryk saw the Blues move to within a point of Newcastle with a game in hand.
The away side's effort were not aided by the injury to Gordon in the first half, which came after Jackson's sixth-minute opener.
The England Under 21 international sank to the ground holding his left knee, signaling for the Newcastle medical staff to attend to him.