11. David Beckham (2003)
Beckham was Manchester United’s biggest star but this didn’t keep him safe from the wrath of Sir. Alex Ferguson. The celebrated coach clashed with Beckham several times but one moment stands above them all. After an argument developed between the two men, Ferguson kicked a soccer boot into the air. It came down and lacerated Beckham’s face, forcing him to get multiple stitches (via Manchester Evening News).

Technically, Beckham didn’t cause the injury to himself, but he was responsible for infuriating his coach. It was a ridiculous situation that left both men red-faced in front of the media. Soon after, Beckham departed for Real Madrid where he became one of the highest-paid soccer players on the planet. However, the pair maintain a good relationship and laugh about the incident now.