In 1946 Bobby Riggs, a professional, had established himself as the best player in the world. In 1947, he was still the best professional player but Jack Kramer as an amateur player won Wimbledon and the U.S. Championships. Kramer, having turned professional in November after the amateur Pacific Coast Championships, met Riggs three times in late December on fast indoor courts and Riggs won twice, and Kramer trailed Riggs 6–8 before catching up at 14–14. But at the end of their long series of matches in May 1948, Kramer had led Riggs decisively in head-to-head meetings.