it's quite another to pout like a baby, throw a tantrum, and leave a press conference before it is over because you don't want to answer difficult questions. You make many millions of dollars based on your ability to play the sport, you should be able to sit down and act like an actual grownup when things don't go your way. Throw a tantrum when the cameras aren't on you. You've got millions of dollars to spend on making yourself feel better. Just wait for a few hours.
Oh, and jump on the freaking ball when you fumble it...