Muhammad Ali wasn't even the greatest boxer ever soo...
LOL @ people acting like anyone gives a **** about Cricket.
The greatest sportsman would probably have to be Maradona. He personified football (aka the most popular, the greatest and most competitive sport in the world).
You realise how ridiculously, ridiculously good you'd have to be to be considered one of the greatest players of all time in a Sport which has literally thousands of professional players and millions of players around the world?