.... is already an Ozeki.
Nadal needs his 10th grand slam title for the "Dai", Djokovic just a final to get promoted Grand Champion--he would be the 16th of the open era.
(For Ozumo-tennis fans, follow the link in my signature below).
Thanks for the info. Though if this was a Sumo fight, nobody would stand a chance against Nadal (Baghdatis, maybe, he does sport an impressive potbelly).