Referee Paul Tierney has a massive job on his hands when Liverpool face Manchester United.
The official has been a massive talking point in the build-up to the top-of-the-table Premier League clash, not least because of Jurgen Klopp’s recent comments about the number of penalties United receive.
Tierney will be well aware that the fixture between these two eternal rivals has a history of turning nasty.
From Javier Mascherano losing his head to Paul Scholes trying to take off Xabi Alonso’s, there have been numerous red cards down the years.
One man who was lucky to avoid one, though, was Jamie Carragher when he put in a heavy tackle on Nani.
The centre-back was moved over to right-back mid-game and Sir Alex Ferguson immediately reacted by moving the rapid winger over to terrorise the England international.
It clearly worked, as Carragher completely mistimed one of his challenges and sent Nani flying into the air. So don’t get us wrong, it was a poor tackle.
However, the Portuguese’s reaction infuriated Liverpool players and fans’ alike. Nani was known for having a fairly low pain threshold during his time at Old Trafford, but his playacting as he tried to get Carragher punished went a little too far – in fact, Wayne Rooney even claimed he started crying.