Luis Suárez has a history of troubling opponents. He outraged all of Africa with his handball against Ghana in the 2010 World Cup; he was found guilty of racially abusing Patrice Evra last season; he appeared to punch the Chilean defender Gonzalo Jara during a World Cup qualifier a few months ago; and he has now bitten players in two countries.
Suárez is exceptional in every way, but we've all witnessed strange and shocking scenes in sport. Not everyone can say they were bitten by a man who broke the hearts of a continent, but what is the oddest behaviour you have witnessed while watching or playing sport?
What is the worst behaviour you have seen on a sports field?
