If you are a fan of either of these 2 players but not both, you have to at the very least acknowledge the greatness of the one may you may not happen to like because otherwise you are knocking the luster of the one you do like. A buddy of mine who is an avid Fed was saying Nadal sucks. I was like wait a minute. Fed didn't loose those slam finals to someone who sucks! I don't see how anyone with half a brain can't acknowledge the greatness of another player even if it's one you don't happen to like.