What a question to contemplate. Here you have Mr. Federer at Roland Garros trying to win and complete his grand slam. On the other side, If Nadal beats Federer--Nadal is 1 up in the chase towards the US OPEN. Nadal will have the Grand Slam by winning the US OPEN..only if Federer can stop him. Its going to be unbelievable to watch. Its almost like a greyhound dog race--and these two dogs are Thoroughbreds.