Professional tennis requires some serious mental fortitude. But sometimes, a guy just totally loses his sh*t.
Not so gentle giant Jerzy Janowicz of Poland was serving for the set against Indian Somdev Devvarman when a shot from his opponent that looked out was called in. Janowicz proceeded to throw a temper tantrum of epic proportions, falling to his knees and screaming "How many times?!"
Then, during set break, he exchanged a few heated words with the umpire and was issued a warning for unsportsmanlike conduct, to which Janowicz replied, "For what?" Oooh, attitude!
The big man (6-foot-8) ended up winning the match. So the hissy fit was probably worth it.