Harald Theissen (born 23 March 1959) is a former professional tennis player from Germany.ITF Pro Circuit Profile
Career Theissen competed in the 1982 Australian Open and won a five set match over Lloyd Bourne in the opening round of the singles draw, before losing in the second round to Mike Bauer.ATP World Tour Profile In the men's doubles he and partner Damir Keretić lost in the first round to Peter Johnston and John McCurdy.
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