Bob Hewitt and Peng Shuai, are professional ?
Bob Hewitt Robert Anthony John Hewitt (born 12 January 1940) is a former professional tennis player from Australia. In 1967, after marrying a South African, he became a South African citizen. He has won 15 major titles and a career Grand Slam in both men's and mixed doubles.
Chang Hao (Go player) Chang Hao (; born November 7, 1976 in Shanghai) is a professional Go player. He is a 9 dan Go player from China. He is China's best player of the 1990s and one of the best in the world. Growing up he was a prodigy in China, he has won many titles, including three international champions. He is the best friend of Lee Chang-ho, whom he most recently defeated in the final of the 7th Chunlan Cup. Some of his hobbies include playing football, swimming, and traveling. He is married to Zhang Xuan, who is also a Go player.