Until proven otherwise, current number one ranked in the world Rafael Nadal is the undisputed king of the French Open.
Eight titles already in the French Open seeking number nine. Seeking his fifth straight actually. That is simply astounding.
Not to forget he is 5-0 against Novak Djokovic in the French Open (1-0 in the 2012 final).
To conclude? Bet your house and life savings on Mr. Nadal. No tennis player in the history of the sport is as good as he is in the French Open.
If only he could perform the way he does in the French Open in other tournaments (cough cough, Australian open, cough Wimbledon, cough cough).