Originally Posted by YouCantBeSerious
When you compare two players of different eras who have never played each other, and who competed in completely different conditions and against completely different fields, all you have is assumptions. This whole thread (and more than 50% of this whole site) is just a bunch of assumptions, like the GOAT discussion.
Having assumption but at least have some facts to back up, and you have nothing. That's just like saying JMac is not ahead of Roddick and would get killed by him at Wimbledon and the USO.
So why do Phelps, Gretzky, Rice or Jordan are considered the greatest player to their respective sport? Because that's the consensus by general public. Federer is widely considered the greatest tennis player, so he deserve the equal respect. Capiche ?