Nicolas Jackson was left furious with Chelsea teammate Enzo Fernandez after the Argentine got in the way of his shot.
Chelsea were 1-0 up through Raheem Sterling’s first-half goal when they had another brilliant chance to equalise.
Conor Gallagher pulled the ball back to Christopher Nkunku before the ball fell into Jackson’s path in the penalty area.
The Seneglease striker was about to fire a shot but Fernandez got in his way before the latter fired the ball well over the crossbar.