Bradman. No other sportsman was so ahead of every other cricketer. He averaged near 100 when batsmen in those days averaged 30s. And just under twice as much as the guys second to him. I read an article how he was statistically the best sportsman ever.
Can't believe he's not in the poll.
Many are saying Mohammed Ali, whom no doubt was the most influential, but I'm not sure he was a huge amount better than the next best guy when it actually came to the sport. Not the extent of guys like Bradman.
I'm no big fan of running, but it's pretty significant how Bolt has broken the records and seems to be a distance ahead of the next guy (in terms of 100m running time). As well as holding the WR for 200m and in the relay. And when you look at him, it seems as he's running within himself at the end. Even the guys near him, most of them have been involved in drugs, so you're not sure about the authenticity of their speeds, but Usain's clean. It'd be interesting if anyone can break his record after he's retired. If they do, then he'll be considered just another great. If no one can, that'd really be something, he'd be the fastest man who ever lived, and no one can reach those heights again. Whilst in athletics we see that athletes records always seem to be broken, not sure it'll be so easy to break Bolt's 100m record.