Kwon Soon-woo (; born 2 December 1997) is a South Korean professional tennis player. He has been ranked as high as world No. 52 ranking by the ATP, achieved in November 2021 and a doubles ranking of world No. 224, attained in December 2022. Kwon has won two ATP, six ATP Challenger Tour and five ITF World Tennis Tour singles titles.
He broke into the top 100 of the ATP singles rankings in August 2019 after reaching the quarterfinals at the Los Cabos Open and contested his first ATP Tour final at the Astana Open in September 2021, where he won his maiden title and made his top 60 debut. In January 2023, he won his second ATP Tour title at the Adelaide International as a lucky loser, becoming the first Korean to win multiple ATP titles and the tenth lucky loser champion overall in the Open Era.
Early life Kwon was born in a small town Sangju and began playing tennis at age 10. He moved to Seoul at age 16 and attended high school there with Lee Duck-hee, another future ATP Tour player. His father Younghun is a talented amateur tennis player and introduced him to tennis. His favorite surface is hard and favorite shots are down-the-line forehand and drop shot.
Professional career 2018–2019: ATP Tour & Grand Slam & top 100 debuts Kwon made his tour-level and Grand Slam debut after winning the 2018 Asia-Pacific Wildcard Playoff for the main draw of the 2018 Australian Open.
He made his top 100 debut on 5 August 2019 at world No. 97, after reaching the quarterfinals as a qualifier at the 2019 Los Cabos Open.
2020–2021: First major win at the US Open; French Open third round, maiden ATP title
In February 2020, Kwon reached four consecutive ATP Tour-level quarterfinals in Pune, New York, Delray Beach and Acapulco. As a result, Kwon rose to a career-high ranking of 69 on 2 March 2020. Kwon defeated world No. 24, Dušan Lajović, in straight sets to reach the quarterfinals in Acapulco, which was his first ATP 500 event. He lost to eventual champion Rafael Nadal in the quarterfinals.
At the 2020 US Open Kwon recorded his first win in a Grand Slam defeating wildcard Thai-Son Kwiatkowski.
Kwon reached the third round of a Grand Slam for the first time in his career at the 2021 French Open where he defeated South African Kevin Anderson and Andreas Seppi before losing to another Italian ninth seed and eventual quarterfinalist Matteo Berrettini.
Despite losing in qualifying at the Eastbourne International, Kwon entered with a second-round bye as a lucky loser after Reilly Opelka withdrew. He made the semifinals before falling to Alex de Minaur. Kwon was competing in his maiden ATP Tour semifinal after winning his first quarterfinal in his eighth attempt against Ilya Ivashka.
In Astana, Kwon won his first ATP Tour-level title. There, he defeated qualifier Evgeny Donskoy, third seed Dušan Lajović, and seventh seed Laslo Đere to reach his second ATP semifinal. In the semifinal, he defeated home favourite and second seed Alexander Bublik to advance to his first ATP Tour-level final. He defeated James Duckworth in straight sets to win his first ATP title and became the first South Korean to win on the ATP Tour and only the second Korean to win a tour-level title in the Open era since 2003 Sydney champion Hyung-Taik Lee. As a result, he reached a new career-high of No. 57 on 27 September 2021.
2022: Maiden ATP 500 singles semifinal, Australian Open doubles third round At the Australian Open, he won his first match defeating Holger Rune in five sets. He lost in the second round to Denis Shapovalov in a tight five-set match with three tiebreaks.
At Wimbledon, he lost in the first round to the top seed and eventual champion, Novak Djokovic, in four sets.
Ranked No. 120 at the Japan Open, he reached the quarterfinals for a second time at the ATP 500-level defeating sixth seed Alex de Minaur and Mackenzie McDonald. He defeated Pedro Martínez to reach his first ATP 500-level semifinal. As a result, he moved more than 30 positions up in the rankings, back into the top 100.
2023–2024: Second title won as lucky loser, hiatus, Olympics debut He won his second career ATP title in Adelaide, defeating Roberto Bautista Agut in three sets. In doing so, he became the first Korean to win multiple ATP titles. He became the first lucky loser to reach the final in Adelaide's tournament history and the first to win an ATP Tour title since Marco Cecchinato in Budapest in 2018, and the tenth lucky loser champion overall.
After a six months hiatus, he returned to the 2023 US Open and the 2024 Australian Open using protected ranking.
2025: Military hiatus In December 2024, Kwon announced that he would step away from tennis and fulfill his mandatory military obligation, which began in January 2025.
Despite actively completing military service, Kwon was permitted to enter domestic tournaments and to represent the national team in select overseas events. As such he competed in a Davis Cup Qualifiers tie in Czechia, a South Korean national event, and the Busan Challenger.
2026: Three Challenger titles Entering the main-draw as a qualifier, Kwon won his fourth ATP Challenger title in Phan Thiết in January, defeating Ilia Simakin in the final. On home soil and playing in the tournament as a wildcard entrant, he won the Gwangju Open in April, overcoming August Holmgren in the final. The following month he defeated Bu Yunchaokete in the final at the Wuxi Open to claim his third Challenger title of the year. Kwon subsequently qualified for Wimbledon while still completing his mandatory military service. He defeated Martín Landaluce in the first round before losing to 21st seed Tommy Paul in the second round, in his final tournament before being discharged from military service on 12 July.
Personal life On May 22, 2023, it was confirmed that Kwon is dating singer Yubin of Wonder Girls. On October 5, 2023, Yubin's agency confirmed their break-up.
National representation Kwon has represented South Korea in the Davis Cup. He was first nominated to the team for the 2017 Davis Cup, making his debut against Uzbek tennis player Denis Istomin.
Kwon represented South Korea at the 2022 Davis Cup Finals and recorded his first victory over a top-20 player by defeating world No. 13, Félix Auger-Aliassime 7–6(5), 6–3 in the group stage tie versus Canada.
Performance timelines
Singles Current through the 2026 Wimbledon Championships.
Tournament2017201820192020202120222023202420252026SRW–LGrand Slam tournamentsAustralian OpenA1RQ11R1R2R1R1RAA0 / 61–6French OpenAAQ11R3R1RA2RAA0 / 43–4WimbledonQ1A1RNH2R1RA1RA2R0 / 52–5US OpenQ1A1R2R1R2R1R1RAQ10 / 62–6Win–loss0–00–10–21–33–42–40–21–40–01–10 / 218–21ATP World Tour Masters 1000Indian Wells MastersAAANH1R1RAQ1AA0 / 20–2Miami OpenAAANH1R1RA2RAA0 / 31–3Monte-Carlo MastersAAANHAQ1AAAA0 / 00–0Madrid OpenAAANHA1RAAAA0 / 10–1Italian OpenAAAQ1AQ1AAAA0 / 00–0Canadian OpenAA1RNHAQ2AAA0 / 10–1Cincinnati MastersAAAQ2Q1Q1AAA0 / 00–0Shanghai MastersAAANot HeldAAA0 / 00–0Paris MastersAAAAAAAAA0 / 00–0Win–loss0–00–00–10–00–20–30–01–10–00–00 / 71–7National representationDavis CupZ1Z1Z1AWG1RRRRWG1Q10 / 213–10Career statistics2017201820192020202120222023202420252026CareerTournaments01771622660165Titles / Finals0 / 00 / 00 / 00 / 01 / 10 / 01 / 10 / 00 / 00 / 02 / 2Overall win–loss3–10–27–78–719–1520–247–93–71–13–171–74Win %Year-end ranking16823588955383196348486
Doubles Current through the 2022 Korea Open.
Tournament20182019202020212022SRW–LGrand Slam tournamentsAustralian OpenAA1RA3R0 / 22–2French OpenAA1RA1R0 / 20–2WimbledonAANHA1R0 / 10–1US OpenAAA1R1R0 / 20–2Win–loss0–00–00–20–12–40 / 72–7National representationDavis CupZ1AAAA0 / 00–1Career statistics20182019202020212022CareerTournaments1221713Titles / Finals0 / 00 / 00 / 00 / 00 / 00 / 0Overall win–loss0–12–20–20–15–77–13Year-end ranking0280342851232
ATP Tour finals
Singles: 2 (2 titles) LegendGrand Slam (0–0)ATP Masters 1000 (0–0)ATP 500 (0–0)ATP 250 (2–0)Finals by surfaceHard (2–0)Clay (0–0)Grass (0–0)Finals by settingOutdoor (1–0)Indoor (1–0)
ResultW–LDateTournamentTierSurfaceOpponentScoreWin1–0Astana Open, KazakhstanATP 250Hard (i) James Duckworth7–6(8–6), 6–3Win2–0Adelaide International 2, AustraliaATP 250Hard Roberto Bautista Agut6–4, 3–6, 7–6(7–4)
Records These records were attained in the Open era of tennis. TournamentYearRecord accomplishedPlayer tiedAdelaide International2023Winning an ATP tournament as lucky loserHeinz GünthardtBill ScanlonFrancisco ClavetChristian MiniussiSergiy StakhovskyRajeev RamLeonardo MayerAndrey RublevMarco Cecchinato
Davis Cup LegendGroup membershipWorld Group (0)Group I (7–3)Group II (0)Group III (0)Group IV (0)
indicates the outcome of the Davis Cup match followed by the score, date, place of event, the zonal classification and its phase, and the court surface.
Rubber outcomeRubberMatch type (partner if any)Opponent nationOpponent player(s)Score1–3; 3–5 February 2017; Gimcheon Sports Town Tennis Courts, Gimcheon, South Korea; Group I Asia/Oceania First round; Hard surfaceDefeatIVSingles UzbekistanDenis Istomin6–3, 6–7(5–7), 2–6, 6–7(12–14)2–3; 7–9 April 2017; ASB Tennis Arena, Auckland, New Zealand; Group I Asia/Oceania First round play-offs; Hard surfaceVictoryIISingles New ZealandMichael Venus6–2, 6–2, 7–6(7–1)VictoryIVSinglesJosé Statham6–3, 6–2, 6–42–3; 15–17 September 2017; Yang Gu Tennis Park, Yang Gu, South Korea; Group I Asia/Oceania Second round play-offs; Hard surfaceVictoryIISingles Chinese TaipeiJason Jung6–3, 6–4, 2–6, 7–6(7–4)0–4; 2–3 February 2018; Pakistan Sports Complex, Islamabad, Pakistan; Group I Asia/Oceania First round; Grass surfaceDefeatISingles PakistanAisam-ul-Haq Qureshi3–6, 6–1, 6–7(6–8)DefeatIIIDoubles (with Lim Yong-kyu)Aqeel Khan Aisam-ul-Haq Qureshi6–7(8–10), 4–63–1; 14–15 September 2019; Guiyang Olympic Sports Center Tennis Stadium, Guiyang, China; Group I Asia/Oceania; Hard surfaceVictoryISingles ChinaZhang Zhizhen7–6(7–4), 6–7(4–7), 7–5VictoryIVSinglesBai Yan6–4, 6–33–1; 17–18 September 2021; The International Tennis Hall of Fame, Newport, USA; World Group I; Grass surfaceVictoryIISingles New ZealandFinn Reynolds7–6(7–1), 6–3VictoryIVSinglesRubin Statham6–3, 6–3
ATP Challenger Tour finals
Singles: 9 (6 titles, 3 runner-ups) LegendATP Challenger Tour (6–3)Finals by surfaceHard (6–3)Clay (0–0)Grass (0–0)Carpet (0–0)
ResultW–LDateTournamentTierSurfaceOpponentScoreLoss0–1Yokohama, JapanChallengerHard Yūichi Sugita4–6, 6–2, 6–7(2–7)Loss0–2Seoul, South KoreaChallengerHard Thomas Fabbiano6–1, 4–6, 3–6Loss0–3Kaohsiung, TaiwanChallengerHard (i) Gaël Monfils4–6, 6–2, 1–6Win1–3Yokohama, JapanChallengerHard Oscar Otte7–6, 6–3Win2–3Seoul, South KoreaChallengerHard Max Purcell7–5, 7–5Win3–3Biella II, ItalyChallengerHard (i) Lorenzo Musetti6–2, 6–3Win4–3Phan Thiết, VietnamChallengerHard Ilia Simakin6–2, 7–6(7–5)Win5–3Gwangju, South KoreaChallengerHard August Holmgren6–4, 7–5Win6–3Wuxi, ChinaChallengerHard Bu Yunchaokete6–2, 7–6(7–2)
Doubles: 1 (1 runner-up) LegendATP Challenger Tour (0–1)
ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreLoss0–1Surbiton, United KingdomChallengerGrass Ramkumar Ramanathan Marcel Granollers Ben McLachlan6–4, 3–6, [2–10]
ITF Futures finals
Singles: 9 (8–1) LegendITF Futures (8–1)Finals by surfaceHard (8–1)Clay (0–0)Grass (0–0)Carpet (0–0)
ResultW–LDateTournamentTierSurfaceOpponentScoreWin1–0Cambodia F1, Phnom PenhFuturesHard Son Ji-hoon7–5, 6–1Win2–0Cambodia F2, Phnom PenhFuturesHard Huang Liang-chi6–3, 6–3Win3–0Japan F2, NishitokyoFuturesHard Yuya Kibi6–3, 6–4Win4–0Korea F5, GimcheonFuturesHard Cho Min-hyeok6–4, 6–4Win5–0Thailand F5, Hua HinFuturesHard Daniel Altmaier6–2, 6–2Win6–0M15 Andong, South KoreaWTTHard Shin Sanhui6–3, 6–1Win7–0M25 Changwon, South KoreaWTTHard Shin Sanhui6–1, 6–2Win8–0M15 Nakhon Pathom, ThailandWTTHard Kaichi Uchida6–2, 6–2Loss8–1M25 Taipei, Chinese TaipeiWTTHard Dane Sweeny2–6, 0–3 ret.
Doubles: 5 (2 titles, 3 runner-ups)