Interesting to see this topic today as I was just asking a co-worker how his son did in his cross country meet on Saturday morning. He said he was watching some of the other boys come in at the front of the pack in his heat (his son was back towards the middle) and saw an incident that would fit right in. I guess two boys were close around the last turn and one got pushed into the grass a bit. It sounded like he felt like the other kid pushed him off the course so he came from behind and shoved the other runner over the fence. My co-worker said there were all kinds of metal stakes in the ground where the kid fell, so the "hot-head" could have easily cause major damage if the other boy had fallen on one! And he said it was right at the finish line in front of all the parents and coaches.

I suppose it's not as surprising when dealing with young kids who haven't had the training and maturity to learn to control their emotions, but I think as you pointed out for some people it's a part of their personality that is a challenge to fully repress. You see it every day outside of sports, as well, it's just more visible on the big world arena of sporting events. Some of the outcomes are quite unfortunate (I didn't see the latest with Djokovic but tend to think he is a stand up guy), especially if someone gets injured because of the outburst. But I will say I have a hard time supporting those McEnroe-type players as I tend to be more of a quiet and calm person myself. I think the only time I got taken out of a sporting event was when I had my first asthma attack. And that was for NOT speaking out to let my coach know I was at my limit, haha. So if anything I'm too quiet sometimes. ;)