 From 1987 through 1991, coached by Složil, Graf won ten Grand Slam singles championships, winning the Australian Open (1988–89-90), the French Open (1987–88), Wimbledon (1988–89-91) and the US Open (1988–89), plus numerous side tournaments.He subsequently served as coach for Jennifer Capriati, Anna Kournikova and Magdalena Maleeva between 1992 and 1999.In 2002, he began work at the World Tennis Club in Naples, Florida.