The Saipan Incident
Sometimes things should stay behind closed doors but this went to the next level. Roy Keane was one of the best players in global soccer when Ireland qualified for the World Cup in 2002. However, his frustrations mounted when his national team coaches didn’t show the same ambitions or even decent preparations.
Keane went head-to-head with his head coach Mick McCarthy at their training camp in Saipan. He roared at McCarthy in an expletive-ridden rant before walking out on the team. It became one of the most notorious incidents in soccer history and their relationship never recovered (via The Guardian).