Yvonne Vermaak (born 18 December 1956) is a former tour tennis player who represented her native South Africa.
Vermaak's best result was reaching the semi-finals of the 1983 Wimbledon Championships, defeating Virginia Wade in the quarter-finals.
In 1977 she won the All England Plate, a competition for players who were defeated in the first three rounds of the Wimbledon singles competition. In the final she defeated Sue Mappin in straight sets.
Late in her playing career, Vermaak became an American citizen.
Vermaak played USTA Master's tennis. Representing Illinois, she was the 1992 Singles Champion of the USTA National Women's Indoor Championships in Homewood for 35s. In 1993, Yvonne Vermaak was the 25s Singles Champion, and again she was the 25s Singles Champion in 1994. In 1995, Vermaak moved to doubles, winning the 25s and 35s doubles with Ann Kiyomura-Hayashi of California. The 1995 Championships was Vermaak's last USTA Championships win.
Career finals
Singles 6 (4–2) ResultNo.DateTournamentSurfaceOpponentScoreWin 1–0 Jun 1977 Beckenham, England Grass Michelle Tyler 6–4, 5–7, 6–1Loss 1–1 Sep 1978 San Antonio, Texas, U.S. Hard Stacy Margolin 5–7, 1–6Loss 1–2 Jan 1982 Fort Myers, Florida, U.S. Hard Lee Duk-hee 0–6, 3–6Win 2–2 Mar 1983 Palm Springs, California, U.S. Hard Carling Bassett 6–3, 7–5Win 3–2 Sep 1983 Salt Lake City, Utah, U.S. Hard Felicia Raschiatore 6–2, 0–6, 7–5Win 4–2 Sep 1984 Salt Lake City, Utah, U.S. Hard Terry Holladay 6–1, 6–2
Doubles 7 (4–3) Finals by surface Hard 2 Clay 2 Grass 0 Carpet 0 ResultNo.DateTournamentSurfacePartnerOpponentsScoreLoss 0–1 Jun 1978 Chichester, England Grass Michelle Tyler Janet Newberry Pam Shriver 6–3, 3–6, 4–6Loss 0–2 Jul 1981 Kitzbühel, Austria Clay Elizabeth Little Claudia Kohde-Kilsch Eva Pfaff 4–6, 3–6Win 1–2 May 1982 Perugia, Italy Clay Kathy Horvath Billie Jean King Ilana Kloss 2–6, 6–4, 7–6Loss 1–3 Nov 1982 Hong Kong Clay Jennifer Mundel Laura duPont Alycia Moulton 2–6, 6–4, 5–7Win 2–3 Sep 1983 Salt Lake City, Utah, U.S. Hard Cláudia Monteiro Amanda Brown Brenda Remilton 6–1, 3–6, 6–4Win 3–3 Feb 1984 Indianapolis, Indiana, U.S. Hard Cláudia Monteiro Beverly Mould Elizabeth Sayers 6–7, 6–4, 7–5Win 4–3 Apr 1984 Miami, Florida, U.S. Clay Patricia Medrado Kate Latham Janet Newberry 6–3, 6–3
References
External links
USTA Master National Indoor results