AgathaRecord
AGATHANo gut feelings
JOIN
Dayeon Back

TennisWTARight-handed

Dayeon Back (born 2002)

South KoreaAge and results

Dayeon Back is a tennis player on the WTA Tour who reached a career-high ranking of No. 245 on July 27, 2026.

7 WTA Tour matches

Updated

2026 record1-1Career highNo. 245Jul 27, 2026

About Dayeon Back

Dayeon Back is a tennis player on the WTA Tour. Born on January 24, 2002, in Daejeon, South Korea, she plays right-handed and turned pro in 2017. On July 27, 2026, Back reached a career-high WTA Tour ranking of No. 245.

Agatha Research DeskUpdated Oct 8, 2026

Match history7

Every WTA Tour, Grand Slam and Olympic main-draw match in our records, newest first. A walkover is listed but never counted in a record.

2026: 1-1

DateTournamentRoundOpponentResultScoreSurface
Sep 23Korea OpenRound 2Maya JointL2-6, 1-6Hard
Sep 21Korea OpenRound 1Yuan YueW6-3, 4-6, 6-1Hard

How she is doing nowThrough Sep 23

2026 record1-1hard 1-1
Last 94-5LWLLLWLWWNewest first. Lost her last match.

CareerPro since 2017

9years2017 to 2026
  1. 2022First WTA matchLost to Na-Lae Han, Korea Open
  2. 2026Career high No. 245Jul 27, 2026
  3. Sep 23, 2026Latest matchLost to Maya Joint, Korea Open

Honors

  • Asian Games bronze medal, doubles, Hangzhou 2022

First WTA match

Sep 18, 2022: lost to Na-Lae Han 1-6, 1-6Korea Open, on hard

Latest match

Sep 23, 2026: lost to Maya Joint 2-6, 1-6Korea Open, Round 2, on hard court

ITF finals

ITF: 21 singles finals, 12 won; 27 doubles finals, 16 won. From 2019 to 2026.

Singles

  1. L
    Jul 2026Runner-up at ITF Horb, Germany (W50, clay), losing to Lea Nilsson 6-7(3), 2-6.
  2. W
    Jun 2026Won the title at ITF Taipei, Chinese Taipei (W35, hard), beating Haruka Kaji 6-1, 7-5.
  3. W
    May 2026Won the title at ITF Andong, South Korea (W35, hard), beating Jeong Bo-young 3-6, 6-2, 6-0.
  4. W
    May 2026Won the title at ITF Changwon, South Korea (W35, hard), beating Lee Ha-eum 6-1, 6-2.
  5. L
    Apr 2026Runner-up at ITF Singapore, Singapore (W15, indoor hard), losing to Rinko Matsuda 6-7(4), 2-6.
  6. L
    Oct 2025Runner-up at ITF Makinohara, Japan (W35, carpet), losing to Sara Saito 1-6, 2-6.
  7. W
    Jul 2025Won the title at ITF Monastir, Tunisia (W35, hard), beating Arianna Zucchini 6-7(4), 6-2, 7-6(7).
  8. W
    May 2025Won the title at ITF Daegu, South Korea (W15, hard), beating Lee Eun-hye 5-6 ret.
Show 13 more
  1. L
    Mar 2025Runner-up at ITF Nonthaburi, Thailand (W35, hard), losing to Lee Eun-hye 3-6, 4-6.
  2. L
    Mar 2025Runner-up at ITF Nonthaburi, Thailand (W15, hard), losing to Anchisa Chanta 6-7((3), 3-6.
  3. W
    Sep 2024Won the title at ITF Yeongwol, South Korea (W15, hard), beating Lee Eun-hye 6-2, 6-1.
  4. W
    Sep 2024Won the title at ITF Yeongwol, South Korea (W15, hard), beating Jeong Bo-young 6-1, 6-2.
  5. W
    Jun 2024Won the title at ITF Daegu, South Korea (W35, hard), beating Eri Shimizu 4-6, 6-2, 6-3.
  6. L
    May 2024Runner-up at ITF Monastir, Tunisia (W15, hard), losing to Mariia Tkacheva 4-6, 3-6.
  7. W
    May 2024Won the title at ITF Monastir, Tunisia (W15, hard), beating Katarina Kuzmova 6-3, 6-0.
  8. W
    Sep 2023Won the title at ITF Yeongwol, South Korea (W15, hard), beating Dasha Ivanova 6-3, 6-0.
  9. L
    Sep 2023Runner-up at ITF Yeongwol, South Korea (W15, hard), losing to Kim Da-bin 2-6, 1-6.
  10. W
    Aug 2023Won the title at ITF Sapporo, Japan (W15, hard), beating Miho Kuramochi 6-2, 6-0.
  11. L
    Jul 2023Runner-up at ITF Nakhon, Thailand (W15, hard), losing to Lanlana Tararudee 4-6, 4-6.
  12. W
    Sep 2022Won the title at ITF Yeongwol, South Korea (W15, hard), beating Kim Da-bin 7-6(2), 3-0 ret.
  13. L
    Sep 2019Runner-up at ITF Yeongwol, South Korea (W15, hard), losing to Choi Ji-hee 7-5, 3-6, 2-6.

Doubles

  1. W
    Oct 2026Won the title at ITF Sydney, Australia (W35, hard) with Ikumi Yamazaki, beating Hikaru Sato and Elyse Tse 2-6, 6-4, [10-5].
  2. L
    Jul 2026Runner-up at ITF Horb, Germany (W50, clay) with Park So-hyun, losing to Sapfo Sakellaridi and Lucie Nguyen Tan 2-6, 6-2, [7-10].
  3. W
    Jun 2026Won the title at ITF Taipei, Chinese Taipei (W35, hard) with Tsao Chia-yi, beating Natsumi Kawaguchi and Ayano Shimizu 7-5, 6-1.
  4. W
    May 2026Won the title at ITF Andong, South Korea (W35, hard) with Jang Su-jeong, beating Jeong Bo-young and Park So-hyun 6-4, 6-3.
  5. W
    May 2026Won the title at ITF Changwon, South Korea (W35, hard) with Guo Meiqi, beating Hanna Chang and Jang Ga-eul 7-5, 7-5.
  6. W
    Apr 2026Won the title at ITF Goyang, South Korea (W35, hard) with Jaeda Daniel, beating Kim Da-bin and Park So-hyun 6-4, 6-0.
  7. W
    Feb 2026Won the title at ITF Monastir, Tunisia (W35, hard) with Sapfo Sakellaridi, beating Alina Yuneva and Daria Egorova 6-3, 6-2.
  8. L
    Nov 2025Runner-up at ITF Playford, Australia (W75, hard) with Lee Eun-hye, losing to Talia Gibson and Maddison Inglis 2-6, 0-6.
Show 19 more
  1. W
    Jul 2025Won the title at ITF Monastir, Tunisia (W35, hard) with Ku Yeon-woo, beating Sakura Hosogi and Misaki Matsuda 6-3, 6-3.
  2. L
    Jul 2025Runner-up at ITF Monastir, Tunisia (W35, hard) with Vaidehi Chaudhari, losing to Tenika McGiffin and Elza Tomase 6-3, 3-6, [8-10].
  3. W
    May 2025Won the title at ITF Andong, South Korea (W35, hard) with Lee Eun-hye, beating Han Hyeong-ju and Kim Eun-chae 3-6, 6-2, [10-4].
  4. W
    May 2025Won the title at ITF Daegu, South Korea (W15, hard) with Lee Eun-hye, beating Kim Da-bin and Ku Yeon-woo 6-1, 6-1.
  5. W
    Feb 2025Won the title at ITF Timaru, New Zealand (W35, hard) with Lee Eun-hye, beating Choi On-yu and Nanari Katsumi 7-5, 6-3.
  6. W
    Sep 2024Won the title at ITF Yeongwol, South Korea (W15, hard) with Lee Eun-hye, beating Kim Na-ri and Ye Qiuyu 6-1, 6-1.
  7. W
    Aug 2024Won the title at ITF Ust-Kamenogorsk, Kazakhstan (W15, hard) with Anastasia Sukhotina, beating Varvara Panshina and Daria Shubina 6-3, 6-1.
  8. L
    Jul 2024Runner-up at ITF Ust-Kamenogorsk, Kazakhstan (W15, hard) with Ayumi Koshiishi, losing to Aglaya Fedorova and Daria Khomutsianskaya 6-7(4), 2-6.
  9. W
    May 2024Won the title at ITF Monastir, Tunisia (W15, hard) with Maria Herazo Gonzalez, beating Natsuho Arakawa and Zhang Ying 6-4, 6-4.
  10. L
    Sep 2023Runner-up at ITF Yeongwol, South Korea (W15, hard) with Jeong Bo-young, losing to Kim Da-bin and Kim Na-ri 2-6, 3-6.
  11. L
    Aug 2023Runner-up at ITF Sapporo, Japan (W15, hard) with Jeong Bo-young, losing to Mushika Mao and Himari Sato 3-6, 4-6.
  12. L
    Aug 2023Runner-up at ITF Sapporo, Japan (W15, hard) with Jeong Bo-young, losing to Nana Kawagishi and Kisa Yoshioka 3-6, 3-6.
  13. L
    Mar 2023Runner-up at ITF Sharm El Sheikh, Egypt (W15, hard) with Jeong Bo-young, losing to Polina Iatcenko and Sandra Samir 4-6, 5-7.
  14. W
    Sep 2022Won the title at ITF Yeongwol, South Korea (W15, hard) with Lee Eun-hye, beating Junri Namigata and Riko Sawayanagi 7-5, 3-6, [13-11].
  15. L
    Sep 2022Runner-up at ITF Yeongwol, South Korea (W15, hard) with Lee Eun-hye, losing to Kim Da-bin and Lee So-ra 4-6, 6-3, [10-12].
  16. L
    Jul 2022Runner-up at ITF Monastir, Tunisia (W15, hard) with Jeong Bo-young, losing to Priska Madelyn Nugroho and Wei Sijia 4-6, 1-6.
  17. L
    Nov 2021Runner-up at ITF Antalya, Turkey (W15, clay) with Tian Fangran, losing to Ksenia Laskutova and Aleksandra Pospelova 6-2, 2-6, [6-10].
  18. W
    Nov 2021Won the title at ITF Antalya, Turkey (W15, clay) with Tian Fangran, beating Anna Chekanskaya and Zoziya Kardava 7-5, 6-3.
  19. W
    Oct 2021Won the title at ITF Antalya, Turkey (W15, clay) with Tian Fangran, beating Doga Turkmen and Melis Ayda Uyar 7-6(5), 6-1.

Sources and updates

Results and schedules come from Agatha's own records of the WTA Tour.

Updated Nov 9, 2026, 7:12 AM ET. Results and form refresh after every match; biography facts are checked weekly.