Yvonne Vermaak (born 18 December 1956) is a former tour tennis player who represented her native South Africa.

This article includes a list of general references, but it lacks sufficient corresponding inline citations. (March 2016)

Yvonne Vermaak

Country (sports)	South Africa
Born	(1956-12-18) 18 December 1956 (age 65) Port Elizabeth, South Africa
Height	1.56 m (5 ft 1+1⁄2 in) [1]
Plays	Right-handed [1]
Singles
Career record	184–172
Grand Slam singles results
French Open	4R (1982)
Wimbledon	SF (1983)
US Open	3R (1984)
Doubles
Career record	111–129
Grand Slam doubles results
Australian Open	2R (1982, 1983, 1984)
French Open	SF (1982)
Wimbledon	QF (1982, 1985, 1986)
US Open	QF (1981)
Grand Slam mixed doubles results
Wimbledon	3R (1982)
US Open	3R (1984)

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.^{[citation needed]}

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)

Result	No.	Date	Tournament	Surface	Opponent	Score
Win	1–0	Jun 1977	Beckenham, England	Grass	Michelle Tyler	6–4, 5–7, 6–1
Loss	1–1	Sep 1978	San Antonio, Texas, U.S.	Hard	Stacy Margolin	5–7, 1–6
Loss	1–2	Jan 1982	Fort Myers, Florida, U.S.	Hard	Lee Duk-hee	0–6, 3–6
Win	2–2	Mar 1983	Palm Springs, California, U.S.	Hard	Carling Bassett	6–3, 7–5
Win	3–2	Sep 1983	Salt Lake City, Utah, U.S.	Hard	Felicia Raschiatore	6–2, 0–6, 7–5
Win	4–2	Sep 1984	Salt Lake City, Utah, U.S.	Hard	Terry Holladay	6–1, 6–2

Doubles 7 (4–3)

Result	No.	Date	Tournament	Surface	Partner	Opponents	Score
Loss	0–1	Jun 1978	Chichester, England	Grass	Michelle Tyler	Janet Newberry Pam Shriver	6–3, 3–6, 4–6
Loss	0–2	Jul 1981	Kitzbühel, Austria	Clay	Elizabeth Little	Claudia Kohde-Kilsch Eva Pfaff	4–6, 3–6
Win	1–2	May 1982	Perugia, Italy	Clay	Kathy Horvath	Billie Jean King Ilana Kloss	2–6, 6–4, 7–6
Loss	1–3	Nov 1982	Hong Kong	Clay	Jennifer Mundel	Laura duPont Alycia Moulton	2–6, 6–4, 5–7
Win	2–3	Sep 1983	Salt Lake City, Utah, U.S.	Hard	Cláudia Monteiro	Amanda Brown Brenda Remilton	6–1, 3–6, 6–4
Win	3–3	Feb 1984	Indianapolis, Indiana, U.S.	Hard	Cláudia Monteiro	Beverly Mould Elizabeth Sayers	6–7, 6–4, 7–5
Win	4–3	Apr 1984	Miami, Florida, U.S.	Clay	Patricia Medrado	Kate Latham Janet Newberry	6–3, 6–3

References

External links

• Yvonne Vermaak at the Women's Tennis Association
• Yvonne Vermaak at the International Tennis Federation
• USTA Master National Indoor results^{[permanent dead link]}

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[es] Yvonne Vermaak