Rafael Nadal began playing tennis at age 4 with his uncle and coach Toni Nadal. He turned professional in 2001 and has since won 8 Grand Slam singles titles, a record 18 ATP Masters 1000 tournaments, Olympic gold in 2008, and helped Spain win Davis Cup titles in 2004, 2008, and 2009. Known as "The King of Clay", Nadal is considered the greatest clay court player ever due to his exceptional success on that surface.