Chelsea defender Andreas Christensen was sent off in the 2-0 loss to Liverpool after bringing down Sadio Mane who was through on goal.
Referee Paul Tierney originally gave Christensen a yellow card for his foul on Mane but that was upgraded to a red after the official was advised to check the pitch-side monitor by VAR.
Speaking about the red card shown to Christensen, Chelsea boss Frank Lampard said: “I think it could be given or not. I was perhaps surprised it was given as a yellow first. If it was given as a red straight away, you continue with that.”
Christensen is the first player to be sent off in a Premier League fixture between Chelsea and Liverpool since Lampard saw red in 2009.