The Olympics are a week old...

Not all of those complaints (if any) are coming from the athletes. They are mostly coming from the NBC broadcasters and other American sports media outlets. The "8yr old Chinese girl" thing is a legitimate concern b/c that was a real suspicious age violation issue that had merit (not just how they looked, but actual documentation issues). The American gymnasts, however, never complained as far as I saw and only gave credit to how well the Chinese women competed.

Baseball vs Cuba is being complained about b/c the tiebreak rules are absolutely odd and ridiculous in the 11th inning. Most who follow baseball agree with how dumb they are. The American baseball players never complained about Cuba winning, just about the strange circumstances of the tiebreak rules (which they accepted as just a part of the game). Only the managers were bitching at eachother.

Blake wasn't complaining about losing, he was complaining about poor sportsmanship. His argument made sense and most importantly, he never blamed his loss on that play. Had he won he probably would still be ticked by it based on his words & actions in competitions past, and his general opinion of the Olympics.

The American boxer situation was weird, and the only one that sounded somewhat like sour grapes. From what I am hearing about it, he wasn't complaining about fans yelling. He decided to listen to the crowd's advice on how to win instead of apparently listening to his coaches. The crowd was supposedly telling him to dance around and his coaches were telling him to throw punches. He was also confused about the judging/scoring. I'm reading like 10 different stories on this, so sorry if I'm sounding ill informed here.