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Cho Yoon-jeong
Singles
Country (sports)	South Korea
Residence	Seoul, Korea
Born	(1979-04-02) 2 April 1979 (age 45) Andong, Korea
Height	1.67 m (5 ft 6 in)
Turned pro	1996
Retired	2008
Plays	Right-handed (two-handed backhand)
Prize money	$603,590
Career record	255–180 (58.6%)
Career titles	5 ITF
Highest ranking	No. 45 (14 July 2003)
Grand Slam singles results
Australian Open	2R (2003)
French Open	1R (2002, 2003, 2005)
Wimbledon	2R (2003, 2005)
US Open	3R (2002, 2005)
Doubles
Career record	116–84 (58.0%)
Career titles	1 WTA, 10 ITF
Highest ranking	No. 98 (22 September 2003)
Grand Slam doubles results
Australian Open	1R (1999, 2006)
French Open	1R (2005)
Wimbledon	1R (1998, 2004)
US Open	2R (2003)

Cho Yoon-jeong (Korean: 조윤정, born 2 April 1979) is a South Korean former tennis player.

In her career, she won one doubles title on the WTA Tour, at Seoul in 2004. Her best Grand Slam performance came when she made the third round of the 2005 US Open by defeating Arantxa Parra Santonja in three sets in the first round, upsetting the 27th seed Gisela Dulko in the second round, before she fell to No. 7, Justine Henin. She reached career-high WTA rankings of No. 45 in singles (in July 2003), and No. 98 in doubles (in September 2003).

Yoon-jeong retired from professional tennis in 2008.

WTA career finals

Singles: 3 (3 runner-ups)

Legend
Tier I (0–0)
Tier II (0–0)
Tier III (0–0)
Tier IV & V (0–3)

Result	Date	Tournament	Surface	Opponent	Score
Loss	Nov 2002	Pattaya Open, Thailand	Hard	Angelique Widjaja	2–6, 4–6
Loss	Jan 2003	Auckland Open, New Zealand	Hard	Eleni Daniilidou	4–6, 6–4, 6–7^(2–7)
Loss	Jan 2006	Canberra International, Australia	Hard	Anabel Medina Garrigues	4–6, 6–0, 4–6

Doubles: 2 (1 title, 1 runner-up)

Result	Date	Tournament	Surface	Partner	Opponents	Score
Loss	Jul 2003	Stanford Classic, United States	Hard	Francesca Schiavone	Cara Black Lisa Raymond	6–7^(5–7), 1–6
Win	Oct 2004	Seoul Open, South Korea	Hard	Jeon Mi-ra	Chuang Chia-jung Hsieh Su-wei	6–3, 1–6, 7–5

ITF Circuit finals

Singles: 13 (5–8)

Legend
$100,000 tournaments
$75,000 tournaments
$50,000 tournaments
$25,000 tournaments
$10,000 tournaments

Outcome	No.	Date	Tournament	Surface	Opponent	Score
Runner-up	1.	31 March 1996	ITF Jakarta, Indonesia	Hard	Choi Young-ja	2–6, 1–6
Winner	2.	6 April 1997	ITF Jakarta	Hard	Choi Young-ja	6–4, 6–1
Runner-up	3.	13 April 1997	ITF Jakarta	Hard	Choi Young-ja	1–6, 5–7
Winner	4.	18 February 2001	ITF Midland, United States	Hard	Tara Snyder	6–3, 6–1
Runner-up	5.	18 February 2001	ITF Seoul, South Korea	Hard	Miho Saeki	3–6, 0–6
Runner-up	6.	25 November 2001	ITF Nuriootpa, Australia	Hard	Saori Obata	4–6, 1–6
Winner	7.	21 July 2002	ITF Oyster Bay, United States	Hard	Irina Selyutina	7–6⁽⁵⁾, 6–4
Winner	8.	24 November 2002	ITF Nuriootpa	Hard	Alicia Molik	6–4, 6–1
Runner-up	9.	8 June 2003	ITF Surbiton, United Kingdom	Grass	Kristina Brandi	1–6, 3–6
Runner-up	10.	21 November 2004	ITF Nuriootpa	Hard	Evie Dominikovic	4–6, 7–5, 4–6
Runner-up	11.	28 November 2004	ITF Mount Gambier, Australia	Hard	Evie Dominikovic	5–7, 3–6
Runner-up	12.	13 February 2005	ITF Midland	Hard	Laura Granville	3–6, 6–3, 6–7⁽⁶⁾
Winner	13.	20 March 2005	ITF Orange, United States	Hard	Julia Schruff	7–6⁽³⁾, 6–1

Doubles: 16 (10–6)

Outcome	No.	Date	Tournament	Surface	Partner	Opponents	Score
Runner-up	1.	13 April 1997	ITF Jakarta, Indonesia	Hard	Won Kyung-joo	Jasmine Choudhury Lizzie Jelfs	4–6, 6–7
Winner	2.	5 May 1997	ITF Seoul	Clay	Kim Eun-ha	Choi Young-ja Park Sung-hee	6–3, 7–6⁽⁶⁾
Runner-up	3.	3 May 1998	ITF Gifu, Japan	Grass	Park Sung-hee	Catherine Barclay Kerry-Anne Guse	6–7⁽³⁾, 4–6
Winner	4.	10 May 1998	ITF Seoul	Clay	Park Sung-hee	Ding Ding Li Ting	6–1, 3–6, 6–2
Winner	5.	21 March 1999	ITF Noda, Japan	Hard	Park Sung-hee	Shinobu Asagoe Yuka Yoshida	6–3, 6–3
Winner	6.	2 May 1999	ITF Gifu	Carpet	Chae Kyung-yee	Shiho Hisamatsu Nana Miyagi	6–2, 4–6, 6–2
Runner-up	7.	24 May 1999	ITF Warsaw, Poland	Clay	Park Sung-hee	Magda Mihalache Jelena Kostanić Tošić	1–6, 3–6
Winner	8.	31 January 2000	ITF Clearwater, United States	Hard	Yi Jing-Qian	Sandra Cacic Lindsay Lee-Waters	6–4, 7–6⁽⁷⁾
Winner	9.	28 May 2000	ITF Ho Chi Minh City, Vietnam	Hard	Saori Obata	Li Na Li Ting	6–1, 6–2
Runner-up	10.	28 October 2000	ITF Seoul	Hard	Jeon Mi-ra	Surina De Beer Marlene Weingärtner	2–4, 1–4, 4–1
Winner	11.	1 May 2002	ITF Gifu	Grass	Evie Dominikovic	Shinobu Asagoe Rika Fujiwara	6–2, 6–2
Winner	12.	12 May 2002	ITF Fukuoka, Japan	Hard	Shinobu Asagoe	Julie Pullin Lorna Woodroffe	6–2, 6–4
Winner	13.	2 May 2004	ITF Gifu	Carpet	Jeon Mi-ra	Chuang Chia-jung Wynne Prakusya	7–6⁽⁴⁾, 6–2
Winner	14.	15 November 2004	ITF Nuriootpa	Hard	Kim Jin-hee	Evie Dominikovic Daniella Jeflea	7–5, 6–2
Runner-up	15.	4 May 2008	ITF Gimcheon, South Korea	Hard	Kim Jin-hee	Chan Chin-wei Jarmila Gajdošová	2–6, 0–6
Runner-up	16.	11 May 2008	ITF Changwon, South Korea	Hard	Kim Jin-hee	Chang Kyung-mi Lee Jin-a	5–7, 2–6