Who is the biggest sports superstar of all time? And why?

Best known around the world, I would put Ali at the top, with Babe Ruth and Pele about even in second place. Even though baseball wasn't followed elsewhere in the world outside of Japan and other parts of Asia (largely because of Ruth's tour of Japan in 1934), Ruth was known around the world and his fame lives on in popular culture today, 70 years after his death. You may not hear much about Pele these days in the US, but there may be more people in the world who know his name than Michael Jordan's. Jordan would be in my Top Ten.

Hard to say. Its kind of subjective depending on the country. But to name just a few(past and current):Babe Ruth, Jessie Owens, Muhammed Ali, Pele, Michael Jordan, Michael Phelps, Lebron James

no one cares

I would definitely agree on the choice of Muhammed Ali. He was a man who actually stood up for his beliefs, and served time for his stance against the Vietnam War. I have great respect for him! It was very disappointing to see him suffer for 32 years from Parkinson's Disease. It was the one thing he couldn't defeat. From his gold metal at the 1960 Olympics tin Rome to his lighting the cauldron at the 1996 Atlanta Games, he was a winner!

Muhammed Ali was certainly the greatest known worldwide of all time.

Andre the Giant of Professional wrestling .

I think Pele, a soccer superstar from Brazil, had the most fame and the most fans.