I was watching a video about Gebrselassie today and couldn't believe this footage when I saw it:
https://youtu.be/zt2cyvm-YjQ?t=4m29s
He and a Kenyan athlete, Josephat Machuka, were battling in the home stretch. Geb passed him right before the line and Machuka punched him when he realized he wasn't going to win.
It's a ridiculous clip. This isn't a guy battling for position; it's just an act of horrific sportsmanship. I'm actually surprised he was able to summon the energy to land a good blow on Geb. At that point in the race, I'd be so exhausted there's no way I could do something like that.
Anyway, thought I'd pass it along for anyone who hadn't seen it. I've never seen something like this happen while a race was still going on.