Petr Cech fails to punch clear the ball as Cheikhou Kouyate heads in the opening goal
Karma, as the old saying goes, is a bit of a b-word.
When Thibaut Courtois was sent off for Chelsea against Swansea, Arsenal fans everywhere laughed, chortled and chuckled. With Petr Cech now firmly a Gooner, they seized on the chance to troll their London rivals about no longer having the Premier League winner to call upon.
Sadly for all Gunners fans, the universe clearly took notice of all their abuse.
Less than 24 hours later, Cech made his Premier League debut for Arsenal, against West Ham at The Emirates. His first major contribution?
Flying out of his goal, punching at thin air and seeing West Ham go 1-0 up.
And his second? Getting beaten at his near post to see Arsenal go 2-0 down.