Chelsea defender Gary Cahill says Swansea's second goal in their 2-2 draw should have been ruled out because there was a foul on him so obvious "you could be sat on the moon and see it".
Swans midfielder Leroy Fer scored after dispossessing Cahill following a heavy touch, with referee Andre Marriner allowing the goal to stand.
An animated Cahill said: "It's a clear foul. Come on, seriously.
"It was clear as day and seeing it back has made me even more angry."
Cahill, who has posted a clip of the incident on social media labelling it "incredible", went to see Marriner after the game.