Unsportsmanlike Behavior Among Professional Athletes and Coaches

I have been watching sports on TV of late, mainly golf, tennis and basketball.  I have to tell you, it kind of grates on me whenever I see an athlete or coach get overly angry about something and begin to act like a baby in front of the camera.  Not naming anyone specifically, but these are top-level figures who have achieved a reputation for quality in their respective areas.  It's one thing to pitch a fit on the court or greens because your shot went wide or you didn't get the call you wanted...sometimes that kind of behavior is rationalized as a way to motivate oneself or teammates to play with more passion.  But I've also seen how some of these, after the match or game has ended, refuse to participate in the traditional congratulations with the other side and/or attend press conferences.  I know that, in at least the professional sphere, athletes and coaches often have the responsibility of making themselves accessible to the press written into their contracts, and as such should consider this as much a part of their "game" as what transpires during the competition.  So, no, I don't like to see folks lose their composure while playing, but that's a lot more understandable...in the midst of heated, intense competition...than just storming off in a huff after it's all over...