Truly remarkable. Less than a year ago Rafael Nadal was regarded as the Spanish clay-court specialist who would be hard pressed to win a major title on any surface other than the terre battue of the French Open. Now, with his prodigious victory over Roger Federer in the Australian Open final, he joins Andre Agassi as the only player in the past 24 years to have won a grand slam on each of the outdoor surfaces: clay, grass and hard.