 Complete the following phrase:  Kuerten was responsible for the only defeat of Roger Federer in a Grand Slam event in 2004. In Kuertens only previous encounter against Federer on clay, in the Hamburg Masters 2002, Federer defeated Kuerten 60, 16, 62. When they met again in the third round at the French Open in 2004, it was Federer who was in domit form, the world no. 1, and expected to win against the injury-ridden Kuerten. Instead, it was Kuerten who overpowered and dominated Federer, beating him in straight sets. This would remain the last time that Federer was defeated in any Grand Slam prior to the quarterfinals stage until his round 2 loss against Serhiy Stakhovsky at Wimbledon in 