At the beginning of the second half, Griezmann looked at a high ball and went up high with his foot to take it down and hit Roberto Firmino unintentionally at the ear with the studs.
The referee did not even have to consult VAR but picked up the red card directly for the careless game.
A desperate Griezmann left the pitch and saw from the side Mohamed Salah put 2-3 for Liverpool on penalties with a quarter left.
At the end of regular time, the referee blew a penalty for Atletico after substitute José Maria Gimenez collapsed in a close match with Digo Jota.
The incident was VAR-examined and it was found that the home player had collapsed before he got entangled in Jota.
Athletics coach Diego Simeone was insane at the bench.