The 20-year-old Czech, who defeated Croatia's Ivan Ljubicic 6-3, 6-4, 3-6, 4-6, 6-4 on Sunday to become the second youngest winner in the 20-year history of the Paris tournament, is one of the few men to have beaten both of the top world's two.
He knocked Federer out of the Olympics last summer and saw off Nadal in the first round of the Cincinnati Masters this year - not a bad achievement for a player who came into Paris ranked 50 in the world.