Composure is one of the most important things a coach or athlete can have out on the field. Without it, little problems can snowball into big ones, and seemingly harmless situations can become unmitigated disasters. Given the innate pressure of being a professional athlete, it’s kind of amazing that players and coaches don’t crack more often.

Thanks to television, radio, and the Internet, when someone does lose their cool, we all get to witness it. Whether it’s a coach like Jim Mora or Dennis Green or an athlete like John McEnroe or Roger Clemens, sports figures nowadays have had all their worst moments captured on film. But who is the worst of the worst? We’ve taken a look across all sports and eras and found the 50 Most Epic Meltdowns in Sports History.

RELATED: The 50 Most Unsportsmanlike Acts in Sports History
RELATED: The 25 Craziest Brawls in Sports History (Video)