Isn't learning to hide the bratty facet of one's personality called growing up? We were all brats to one extent or another as children and youths and learning to hide it, or overcome it most of the time is what we do when we grow up. Sometimes we get petulant as adults, but mostly when we start feeling that way, we try not to show it. Unfortunately, sometimes we fail.
Not apoligizing for Agassi though. I've never been a big fan of his, but it does seem to me that he has shown growth over the years. And as far as showing "mystic" (mistique?) I think he was the most charismatic player of his generation.
Good post, star. Having a temper and being a brat aren't the same thing. When he was young, he was a brat, no doubt about it. Whether you want to admit it, the guy has some serious talent - he just didn't give a crap when he was young. And now that we know what his life was like his behavior, while not acceptable, is at least understandable. Still, he was a complete jerk sometimes.
Saying "Fuck me" because he missed a shot isn't bratty behavior - it's just temper. The time he spit on that umpire was bratty behavior.