Greatest boxer, yes.
But Mohammad Ali wasn’t the greatest sportsman though he claimed to be.
Every kid with an anger issue has thrown punches, but not everyone does the long jump or makes the football sing or throws the javelin and discus.
The greatest in my list are:
1. Jesse Owens, because he also crushed Hitler’s Aryan supremacy myth single-handed.
2. Pele, because he was…well… Pele and Edson Arantes do Nascimento sounds so un-soccer.
3. Daley Thompson, because he was 10 sportsmen in one.
Ali is probably the fourth, because I cannot think of anyone greater right now.