Back Da-yeon

Back Da-yeon (born 24 January 2002) is a Korean tennis player. Back has a career-high singles ranking of world No. 319 by the WTA, achieved on 9 September 2024 and a doubles ranking of No. 324, reached on 11 August 2025.^[1]

Back Da-yeon

Country (sports)	South Korea
Born	(2002-01-24) 24 January 2002 (age 23)
Plays	Right-handed
Prize money	$102,084
Singles
Career record	185–80
Career titles	9 ITF
Highest ranking	No. 295 (31 March 2025)
Current ranking	No. 297 (11 August 2025)
Doubles
Career record	99–63
Career titles	9 ITF
Highest ranking	No. 324 (11 August 2025)
Current ranking	No. 324 (11 August 2025)
Medal record Women's tennis Representing  South Korea Asian Games 2022 Hangzhou Doubles
Last updated on: 11 August 2025.

Career

Back made her WTA Tour debut at the 2022 Korea Open, after qualifying for the singles main draw. She lost in the first round to fellow South Korean player Han Na-lae.^[2]

She was a winner of the Heart Award in the 2023 Billie Jean King Cup.^[3]

Ranked No. 569 at the 2023 Korea Open where she received a wildcard, she upset second seed Jelena Ostapenko in a deciding tie-break having fought back from match point down earlier in the third set.^[4][5][6] before losing in the next round to Kimberly Birrell.^[7]

Given a wildcard for the newly upgraded WTA 500 2024 Korea Open, she was unable to repeat her success of the previous year, going out in the first round in straight sets to qualifier Carol Zhao.^[8]

ITF Circuit finals

Singles: 15 (9 titles, 6 runner–ups)

Legend W35 tournaments (2–1) W15 tournaments (7–5)

Finals by surface Hard (9–6)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Sep 2019	ITF Yeongwol, South Korea	W15	Hard	Choi Ji-hee	7–5, 3–6, 2–6
Win	1–1	Sep 2022	ITF Yeongwol, South Korea	W15	Hard	Kim Da-bin	7–6(2), 3–0 ret.
Loss	1–2	Jul 2023	ITF Nakhon, Thailand	W15	Hard	Lanlana Tararudee	4–6, 4–6
Win	2–2	Aug 2023	ITF Sapporo, Japan	W15	Hard	Miho Kuramochi	6–2, 6–0
Win	3–2	Sep 2023	ITF Yeongwol, South Korea	W15	Hard	Dasha Ivanova	6–3, 6–0
Loss	3–3	Sep 2023	ITF Yeongwol, South Korea	W15	Hard	Kim Da-bin	2–6, 1–6
Loss	3–4	May 2024	ITF Monastir, Tunisia	W15	Hard	Mariia Tkacheva	4–6, 3–6
Win	4–4	May 2024	ITF Monastir, Tunisia	W15	Hard	Katarína Kužmová	6–3, 6–0
Win	5–4	Jun 2024	ITF Daegu, South Korea	W35	Hard	Eri Shimizu	4–6, 6–2, 6–3
Win	6–4	Sep 2024	ITF Yeongwol, South Korea	W15	Hard	Lee Eun-hye	6–2, 6–1
Win	7–4	Sep 2024	ITF Yeongwol, South Korea	W15	Hard	Jeong Bo-young	6–1, 6–2
Loss	7–5	Mar 2025	ITF Nonthaburi, Thailand	W35	Hard	Lee Eun-hye	3–6, 4–6
Loss	7–6	Mar 2025	ITF Nonthaburi, Thailand	W15	Hard	Anchisa Chanta	6–7((3), 3–6
Win	8–6	May 2025	ITF Daegu, South Korea	W15	Hard	Lee Eun-hye	5–6 ret.
Win	9–6	Jul 2025	ITF Monastir, Tunisia	W35	Hard	Arianna Zucchini	6–7(4), 6–2, 7–6(7)

Doubles: 18 (9 titles, 9 runner–ups)

Legend W35 tournaments (2–1) W15 tournaments (7–8)

Finals by surface Hard (7–8) Clay (2–1)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Win	1–0	Oct 2021	ITF Antalya, Turkey	W15	Clay	Tian Fangran	Doğa Türkmen   Melis Ayda Uyar	7–6(5), 6–1
Loss	1–1	Nov 2021	ITF Antalya, Turkey	W15	Clay	Tian Fangran	Ksenia Laskutova   Aleksandra Pospelova	6–2, 2–6, [6–10]
Win	2–1	Nov 2021	ITF Antalya, Turkey	W15	Clay	Tian Fangran	Anna Chekanskaya   Zoziya Kardava	7–5, 6–3
Loss	2–2	Jul 2022	ITF Monastir, Tunisia	W15	Hard	Jeong Bo-young	Priska Madelyn Nugroho   Wei Sijia	4–6, 1–6
Win	3–2	Sep 2022	ITF Yeongwol, South Korea	W15	Hard	Lee Eun-hye	Junri Namigata   Riko Sawayanagi	7–5, 3–6, [13–11]
Loss	3–3	Sep 2022	ITF Yeongwol, South Korea	W15	Hard	Lee Eun-hye	Kim Da-bin   Lee So-ra	4–6, 6–3, [10–12]
Loss	3–4	Mar 2023	ITF Sharm El Sheikh, Egypt	W15	Hard	Jeong Bo-young	Polina Iatcenko   Sandra Samir	4–6, 5–7
Loss	3–5	Aug 2023	ITF Sapporo, Japan	W15	Hard	Jeong Bo-young	Mushika Mao   Himari Satō	3–6, 4–6
Loss	3–6	Aug 2023	ITF Sapporo, Japan	W15	Hard	Jeong Bo-young	Nana Kawagishi   Kisa Yoshioka	3–6, 3–6
Loss	3–7	Sep 2023	ITF Yeongwol, South Korea	W15	Hard	Jeong Bo-young	Kim Da-bin   Kim Na-ri	2–6, 3–6
Win	4–7	May 2024	ITF Monastir, Tunisia	W15	Hard	María Herazo González	Natsuho Arakawa   Zhang Ying	6–4, 6–4
Loss	4–8	Jul 2024	ITF Ust-Kamenogorsk, Kazakhstan	W15	Hard	Ayumi Koshiishi	Aglaya Fedorova   Daria Khomutsianskaya	6–7(4), 2–6
Win	5–8	Aug 2024	ITF Ust-Kamenogorsk, Kazakhstan	W15	Hard	Anastasia Sukhotina	Varvara Panshina   Daria Shubina	6–3, 6–1
Win	6–8	Sep 2024	ITF Yeongwol, South Korea	W15	Hard	Lee Eun-hye	Kim Na-ri   Ye Qiuyu	6–1, 6–1
Win	7–8	Feb 2025	ITF Timaru, New Zealand	W35	Hard	Lee Eun-hye	Choi On-yu   Nanari Katsumi	7–5, 6–3
Win	8–8	May 2025	ITF Andong, South Korea	W35	Hard	Lee Eun-hye	Han Hyeong-ju   Kim Eun-chae	3–6, 6–2, [10–4]
Win	9–8	May 2025	ITF Daegu, South Korea	W15	Hard	Lee Eun-hye	Kim Da-bin   Ku Yeon-woo	6–1, 6–1
Loss	9–9	Jul 2025	ITF Monastir, Tunisia	W35	Hard	Vaidehi Chaudhari	Tenika McGiffin   Elza Tomase	6–3, 3–6, [8–10]

Top 5 highest rank wins

#	Tournament	Category	Start date	Surface	Rd	Opponent	Rank	Score	PSR
1	Korea Open, South Korea	WTA 250	9 October 2023	Hard	1R	Jeļena Ostapenko	No. 13	3–6, 6–1, 7–6(4)	No. 569
2	Korea Open, South Korea	WTA 250	19 September 2022	Hard	Q1	Lina Glushko	No. 218	7–5, 1–6, 6–1	No. 679
3	Incheon Open, South Korea	ITF W100	2 September 2024	Hard	1R	Ma Yexin	No. 223	6–4, 6–3	No. 344
4	Gold Coast Tennis International, Australia	ITF W60	27 November 2023	Hard	1R	Seone Mendez	No. 234	6–3, 6–3	No. 480
5	Korea Open, South Korea	WTA 250	19 September 2022	Hard	Q2	Daniela Vismane	No. 274	6–2, 6–3	No. 679

• statistics correct as of 22 September 2024^[update].

References

1. "Dayeon Back | Player Stats & More – WTA Official". Women's Tennis Association.
2. "Jang Su-jeong out of Korea Open; Han Na-lae advances". Korea JoongAng Daily. 19 September 2022. Retrieved 16 September 2024.
3. "Fernandez, Back, Peterson and Riera named Heart Award winners". Billie Jean King Cup. May 23, 2023. Retrieved 10 October 2023.
4. "Back upsets Ostapenko, Jang knocks out Kenin in Seoul". Women's Tennis Association. Retrieved 2023-11-23.
5. "Korea Open: Dayeon Back stuns Jelena Ostapenko in huge shock, Jessica Pegula cruises past Viktoria Hruncakova". Eurosport. Retrieved 16 September 2024.
6. "Jelena Ostapenko ousted by 569th-ranked Back Dayeon at Hana Bank Korea Open". Tennis.com. Retrieved 16 September 2024.
7. "Birrell enjoying career-best run at WTA tournament in Seoul". Tennis Australia. Retrieved 16 September 2024.
8. "Korea Open: Zhao through to second round". Tennis Majors. 16 September 2024. Retrieved 16 September 2024.

External links

• Back Da-yeon at the Women's Tennis Association
• Back Da-yeon at the International Tennis Federation
• Back Da-yeon at the Billie Jean King Cup (archived former page)