Born in Switzerland on August 8, 1981, Roger Federer was among the Top 3 junior tennis players in Switzerland by age 11. He turned pro in 1998, and knocked out reigning champion Pete Sampras in the fourth round at Wimbledon 2001. Federer became the first Swiss man to win a Grand Slam title, when he won the Wimbledon 2003 singles. In 2004, he won the Australian Open, the U.S. Open and the ATP Masters, and retained the Wimbledon singles title. He also moved from the No. 2. spot to No. 1. In 2006, he won the Australian Open, his fourth successive Wimbledon singles title and his third successive U.S. Open. Federer held the No. 1 ranking from 2004 to 2008, regaining it in 2009—and several times thereafter, after frequent pushes by such rivals as Rafael Nadal and Novak Djokovic.