I don't care about Federer's ranking on that list, but Muhammad Ali should be taken down from such lists due to his obnoxious behavior towards Frazier.
Muhammed Ali is the greatest ever.
He defeated every man he faced, in the strongest era of boxing!
He refused to go the vietnam war!!
Ask a person who doesnt know shit about tennis, ask him/her who is Roger Federer?
They wouldnt even know what your talking about, it could be an animal it could be a plane.
Ask a person who doesnt know shit about boxing, ask him/her who is Muhammed Ali.
They would say he is the greatest boxer ever