The Spanish striker was at Wanda Metropolitano Stadium watching his former team-mates and his new club.

The worst thing that could happen to Diego Costa came true today, as the Spanish striker had to witness Chelsea become the first club to beat Atlético in a UEFA Champions League clash.

Furthermore, having to witness the Blues beat Los Colchoneros at the last gasp saw him make a gesture that will give fans meme material for years to come.

Everything seemed to be going on swimmingly for the home team following Griezmann's goal, but Morata and Batshuayi made the miracle happen and Chelsea walked away with three crucial points in the race for Group C's top spot.

As of now, Atlético sits third in the group after Roma's win against Qarabag. If Simeone's men can't beat the team from Azerbaijan, their run in this competition would be cut short earlier than expected.

Have a look at some reactions from fans following Costa's epic gesture.