John Mattke is a former professional tennis player from the United States.Biography Mattke was born in Minneapolis and came to Gustavus Adolphus College in 1977. While studying for a business degree he spent four years on the college's tennis team. He finished with a 132-31 record in singles and was the 1980 NAIA singles champion. In doubles he was 135-20, having formed a strong doubles partnership with Paul Holbach, which culminated in them winning the 1980 NCAA Division III doubles championship.Source: Wikipedia
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