Back Da-yeon

Back Da-yeon (born 24 January 2002) is a Korean tennis player. She has a career-high singles ranking of 279 by the WTA, achieved on 8 June 2026, and a best doubles ranking of No. 239, reached on 25 May 2026. She has won twelve singles titles and 15 doubles titles on the ITF Circuit.

Back Da-yeon

Country (sports)	South Korea
Born	(2002-01-24) 24 January 2002 Daejeon, South Korea
Height	173 cm (5 ft 8 in)
Turned pro	2017
Plays	Right-handed
Prize money	$147,340
Singles
Career record	235–102
Career titles	12 ITF
Highest ranking	No. 279 (8 June 2026)
Current ranking	No. 281 (15 June 2026)
Doubles
Career record	135–83
Career titles	15 ITF
Highest ranking	No. 239 (25 May 2026)
Current ranking	No. 239 (25 May 2026)
Medal record Women's tennis Representing South Korea Asian Games 2022 Hangzhou Doubles
Last updated on: 20 June 2026.

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.

She was a winner of the Heart Award in the 2023 Billie Jean King Cup.

Ranked No. 569, she received a wildcard from the 2023 Korea Open and upset second seed Jelena Ostapenko in the champion's tie-break having fought back from match point down earlier in the third set. before losing in the next round to Kimberly Birrell.

Given a wildcard for the newly upgraded WTA 500 Korea Open in 2024, she tried to defend her success of the previous year, but went out in the first round, in straight sets to qualifier Carol Zhao.

ITF Circuit finals

Singles: 20 (12 titles, 8 runner-ups)

Legend W35 tournaments (5–2) W15 tournaments (7–6)

Finals by surface Hard (12–7) Carpet (0–1)

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)
Loss	9–7	Oct 2025	ITF Makinohara, Japan	W35	Carpet	Sara Saito	1–6, 2–6
Loss	9–8	Apr 2026	ITF Singapore, Singapore	W15	Hard (i)	Rinko Matsuda	6–7(4), 2–6
Win	10–8	May 2026	ITF Andong, South Korea	W35	Hard	Jeong Bo-young	3–6, 6–2, 6–0
Win	11–8	May 2026	ITF Changwon, South Korea	W35	Hard	Lee Ha-eum	6–1, 6–2
Win	12–8	Jun 2026	ITF Taipei, Chinese Taipei	W35	Hard	Haruka Kaji	6–1, 7–5

Doubles: 25 (15 titles, 10 runner-ups)

Legend W75 tournaments (0-1) W35 tournaments (8–1) W15 tournaments (7–8)

Finals by surface Hard (13–9) 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
Win	10–8	Jul 2025	ITF Monastir, Tunisia	W35	Hard	Ku Yeon-woo	Sakura Hosogi Misaki Matsuda	6–3, 6–3
Loss	10–9	Jul 2025	ITF Monastir, Tunisia	W35	Hard	Vaidehi Chaudhari	Tenika McGiffin Elza Tomase	6–3, 3–6, [8–10]
Loss	10–10	Nov 2025	ITF Playford, Australia	W75	Hard	Lee Eun-hye	Talia Gibson Maddison Inglis	2–6, 0–6
Win	11–10	Feb 2026	ITF Monastir, Tunisia	W35	Hard	Sapfo Sakellaridi	Alina Yuneva Daria Egorova	6–3, 6–2
Win	12–10	Apr 2026	ITF Goyang, South Korea	W35	Hard	Jaeda Daniel	Kim Da-bin Park So-hyun	6–4, 6–0
Win	13–10	May 2026	ITF Changwon, South Korea	W35	Hard	Guo Meiqi	Hanna Chang Jang Ga-eul	7–5, 7–5
Win	14–10	May 2026	ITF Andong, South Korea	W35	Hard	Jang Su-jeong	Jeong Bo-young Park So-hyun	6–4, 6–3
Win	15–10	June 2026	ITF Taipei, Chinese Taipei	W35	Hard	Tsao Chia-yi	Natsumi Kawaguchi Ayano Shimizu	7–5, 6–1

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 1 December 2025.

External links

• Dayeon Back at the Women's Tennis Association
• Dayeon Back at World Tennis
• Dayeon Back at the Billie Jean King Cup (archived former page)
• Baek Da-Yeon at InterSportStats