Poor Mathieu, he had a right nightmare!
There are some players who always seem to make a big impact whenever they come on the pitch. Some players have made a career as super subs, like Ole Gunnar Solskjær who seemed to always score whenever he came off the bench.
While some players are able to be labeled as supersubs, some players seem to end up still having an impact just a rather negative one.
With Francis Coquelin looking a bit knackered after trying to chase Lionel Messi, Luis Suarez and Neymar for over an hour, Arsene Wenger decided to replace him with his fellow countryman.
It was a big chance for Flamini to make an impact and he did exactly that...by fouling Lionel Messi in the box and giving away a penalty which Barca converted.
And a series of tweets from the Arsenal twitter account just about summed up exactly how Flamini's career in North London has gone:
Top Corner (@HITCtopcorner) February 24, 2016
Ouch! Poor Mathieu! We reckon that the Frenchman will have to try and redeem himself when the Gunners take on Louis van Gaal's Manchester United at Old Trafford on Sunday.