If you're squeamish, look away now.
Leg-breaking lunges, two-footed tackles, stamps, kung-fu kicks and flying elbows - this one definitely isn't for the faint-hearted.
Nigel de Jong on Xabi Alonso Spain vs Netherlands, World Cup Final, 2010
"It was one of the worst tackles I have ever suffered," said Alonso after De Jong's kung-fu kick to the chest in the 2010 World Cup Final between Spain and the Netherlands.
Martin Taylor on Eduardo Birmingham vs Arsenal, 2008
Taylor received death threats after this tackle on Eduardo, which left the Brazil-born Croatian with a broken leg. He's always maintained it wasn't malicious.
Ryan Shawcross on Aaron Ramsey Stoke vs Arsenal, 2010
Shawcross' mistimed tackle on Ramsey left the Arsenal midfielder out of the game for a year after he suffered a double leg break. The Stoke defender was visibly shaken afterwards.
Andoni Goikoetxea on Maradona Barcelona vs Athletic Bilbao, 1983
This studs' up challenge earned Goikoetxea his 'Butcher of Bilbao' nickname. It left the Argentinian with a severely damaged ankle.
Lee Bowyer on Gerardo Leeds vs Malaga, 2002
An act of serious assault," is how UEFA described Bowyer's stamp on Gerardo. The midfielder was later handed six-match ban.
Roy Keane on Alf-Inge Haaland Manchester United vs Manchester City, 2001
Keane said in his autobiography that he had sought out Haaland, accusing the player of standing over over him when he injured his cruciate ligaments a few years earlier.
