Muhammad Ali is such an accomplished boxer. In 1999 Ali was also crowned 'sportsman of the century". He had an amazing career.
Yes he was a greatest boxer in the world
He is a legend of boxing for sure. He has left a huge impact on the sport and on so many hearts. He was the heavy weight champion in the world.
No doubt he left a huge impact on the sports
The dedication he had for the sports is defiantly inspirational. Im sure a lot of upcoming boxers look up to him and even the future generations will also.
Yes his dedication in sports is enormous
His saying that he said was so accurate to him. "Im not the greatest; i'm the double greatest. Not only do i know 'em out, i pick the round." So true to his character.  
Yes it is correct that he said  " I am not the greatest "
Are you still a big fan of boxing?
Sure I am still a big fan of boxing