 On his 19th birthday, Nadal defeated Federer in the 2005 French Open semifinals, being one of only four players who defeated the top-seeded player that year (along with Marat Safin, Richard Gasquet, and David Nalbandian).Two days later, he defeated Mariano Puerta in the final, becoming the second male player after Mats Wilander to win the French Open on his first attempt.He also became the first teenager to win a Grand Slam singles title since Pete Sampras won the 1990 US Open at age 19.