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.
Ching Maou Wei Ching Maou Wei (born 14 November 1985) is an American Samoan professional swimmer. He qualified for the 2012 Summer Olympics in London, despite the absence of a professional swimming pool in American Samoa. "Radio Australia" called Maou Wei's qualification as one of the "most unlikely of success stories" of the 2012 Summer Olympics.