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Jérôme Kym

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Jérôme Kym
Kym at Swiss Indoors Basel 2024
Country (sports) Switzerland
ResidenceMöhlin, Switzerland
Born (2003-02-12) 12 February 2003 (age 23)
Rheinfelden, Switzerland
Height1.98 m (6 ft 6 in)
Turned pro2019
PlaysRight-handed (two-handed backhand)
CoachYannick Penkner
Prize moneyUS $840,871
Singles
Career record8–6
Career titles0
Highest rankingNo. 123 (19 May 2025)
Current rankingNo. 178 (24 August 2026)
Grand Slam singles results
Australian OpenQ2 (2025, 2026)
French OpenQ1 (2025, 2026)
WimbledonQ3 (2026)
US Open3R (2025)
Doubles
Career record3–5
Career titles0
Highest rankingNo. 192 (19 May 2025)
Last updated on: 31 August 2026.

Jérôme Cyrill Kym (born 12 February 2003) is a Swiss professional tennis player. He has a career-high ATP singles ranking of No. 123 and a doubles ranking of No. 192, both achieved on 19 May 2025.

Kym represents Switzerland at the Davis Cup, where he has a W/L record of 3–2.[1]

Junior career

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Kym had successful results on the ITF junior circuit, maintaining a 93–27 singles win-loss record.[citation needed] He reached an ITF junior combined ranking of world No. 5 on 11 October 2021.[2]

Professional career

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2019: Davis Cup debut

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In February 2019, partnering Henri Laaksonen, they defeated the Russian duo of Evgeny Donskoy and Andrey Rublev in his first doubles Davis Cup tie.[3]

2024-2025: ATP, Top 125, Major debut and third round

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Kym won his maiden Challenger title at the 2024 UniCredit Czech Open as a qualifier defeating Tseng Chun-hsin.[4] Following his second Challenger title at the 2024 Zug Open he reached the top 200 at world No. 181 on 29 July 2024.[5]

At the 2024 Swiss Indoors in Basel, Kym qualified for his first ATP and ATP 500 main draw[6][7][8] but lost to fifth seed Ugo Humbert.[9] He reached the top 125 at world No. 123 on 19 May 2025, following the 2025 Italian Open. Kym recorded his first ATP wins at the 2025 Swiss Open Gstaad as a wildcard, over qualifiers Calvin Hemery[10][11][12] and Francesco Passaro to reach his first ATP Tour quarterfinal.[13][14]

Kym qualified for his first Grand Slam main draw at the 2025 US Open[15][16] and defeated Ethan Quinn for his first major win.[17][18][19] He defeated 30th seed Brandon Nakashima in a five-set match to reach the third round of a major for the first time in his debut.[20] He was eliminated in the third round after a four-set defeat to world number four Taylor Fritz. In total, he earned around 237,000 US dollars in prize money.[21]

Performance timelines

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Key
W  F  SF QF #R RRQ# DNQ A NH
(W) winner; (F) finalist; (SF) semifinalist; (QF) quarterfinalist; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualification round; (DNQ) did not qualify; (A) absent; (NH) not held; (SR) strike rate (events won / competed); (W–L) win–loss record.
To avoid confusion and double counting, these charts are updated at the conclusion of a tournament or when the player's participation has ended.

Singles

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Current through the 2026 French Open.

Tournament202120222023202420252026SRW–LWin %
Grand Slam tournaments
Australian Open A A A A Q2 Q2 0 / 0 0–0  – 
French Open A A A A Q1 Q1 0 / 0 0–0  – 
Wimbledon A A A A Q1 Q3 0 / 0 0–0  – 
US Open A A A Q3 3R 0 / 1 2–1 67%
Win–loss 0–0 0–0 0–0 0–0 2–1 0–0 0 / 1 2–1 67%
National representation
Davis Cup G2 A A G1 G1 0 / 0 3–2 60%
ATP Masters 1000
Indian Wells Open A A A A A A 0 / 0 0–0  – 
Miami Open A A A A A A 0 / 0 0–0  – 
Monte-Carlo Masters A A A A A A 0 / 0 0–0  – 
Madrid Open A A A A Q2 A 0 / 0 0–0  – 
Italian Open A A A A Q1 A 0 / 0 0–0  – 
Canadian Open A A A A A A 0 / 0 0–0  – 
Cincinnati Open A A A A A 0 / 0 0–0  – 
Shanghai Masters NH A A A 0 / 0 0–0  – 
Paris Masters A A A A A 0 / 0 0–0  – 
Win–loss 0–0 0–0 0–0 0–0 0–0 0–0 0 / 0 0–0  – 
Career statistics
2021 2022 2023 2024 2025 2026 SR W–L Win%
Tournaments 0 0 0 1 2 1 Career total: 4
Titles 0 0 0 0 0 0 Career total: 0
Finals 0 0 0 0 0 0 Career total: 0
Hard win–loss 1–0 0–0 0–0 1–1 2–3 1–0 0 / 2 5–4 56%
Clay win–loss 0–0 0–0 0–0 0–0 2–1 1–1 0 / 2 3–2 60%
Grass win–loss 0–0 0–0 0–0 0–0 0–0 0–0 0 / 0 0–0  – 
Overall win–loss 1–0 0–0 0–0 1–1 4–4 2–1 0 / 4 8–6 57%
Win % 100%  –   –  50% 50% 67% 57.14%
Year-end ranking 1124 428 484 134 187 $824,727

ATP Challenger Tour finals

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Singles: 3 (2 titles, 1 runner-up)

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Legend
ATP Challenger Tour (2–1)
Result W–L    Date    Tournament Tier Surface Opponent Score
Win 1–0 Jun 2024 Czech Open, Czech Republic Challenger Clay Chinese Taipei Tseng Chun-hsin 6–2, 3–6, 6–2
Win 2–0 Jul 2024 Zug Open, Switzerland Challenger Clay Argentina Román Andrés Burruchaga 6–4, 6–4
Loss 2–1 Aug 2026 Platzmann Open, Germany Challenger Clay Germany Tom Gentzsch 4–6, 6–7(4–7)

Doubles: 3 (1 title, 2 runner-ups)

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Legend
ATP Challenger Tour (1–2)
Finals by surface
Hard (0–2)
Clay (1–0)
Result W–L    Date    Tournament Tier Surface Partner Opponents Score
Loss 0–1 Mar 2022 Challenger di Lugano, Switzerland Challenger Hard (i) Switzerland Leandro Riedi Belgium Ruben Bemelmans
Germany Daniel Masur		 4–6, 7–6(7–5), [7–10]
Loss 0–2 Jan 2025 Canberra Tennis International, Australia Challenger Hard France Pierre-Hugues Herbert United States Ryan Seggerman
United States Eliot Spizzirri		 6–1, 5–7, [5–10]
Win 1–2 Apr 2025 Danube Upper Austria Open, Austria Challenger Clay Austria Nico Hipfl United Kingdom David Stevenson
United States Ryan Seggerman		 7–5, 3–6, [10–2]

ITF World Tennis Tour finals

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Singles: 7 (3 titles, 4 runner-ups)

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Legend
ITF WTT (3–4)
Finals by surface
Hard (2–3)
Clay (1–1)
Result W–L    Date    Tournament Tier Surface Opponent Score
Loss 0–1 Jun 2022 M15 Heraklion, Greece WTT Hard Australia Omar Jasika 2–6, 2–6
Loss 0–2 Sep 2022 M25 Setúbal, Portugal WTT Hard Spain Adrià Soriano Barrera 6–7(7–9), 3–6
Loss 0–3 Sep 2022 M25 Plaisir, France WTT Hard (i) France Antoine Hoang 6–7(0–7), 3–6
Win 1–3 Mar 2023 M25 Trento, Italy WTT Hard (i) United Kingdom Alastair Gray 7–6(9–7), 6–2
Win 2–3 Jan 2024 M15 Manacor, Spain WTT Hard Spain Pol Martín Tiffon 6–4, 6–2
Win 3–3 Apr 2024 M15 Antalya, Turkey WTT Clay Bulgaria Yanaki Milev 7–5, 6–2
Loss 3–4 May 2024 M15 Villach, Austria WTT Clay Germany Justin Engel 3–6, 6–3, 3–6

Doubles: 5 (2 titles, 3 runner-ups)

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Legend
ITF WTT (2–3)
Finals by surface
Hard (0–1)
Clay (2–2)
Result W–L    Date    Tournament Tier Surface Partner Opponents Score
Loss 0–1 May 2022 M15 Antalya, Turkey WTT Clay Poland Maks Kaśnikowski United States Bruno Kuzuhara
United States Victor Lilov		 walkover
Loss 0–2 Apr 2023 M25 Split, Croatia WTT Clay Poland Maks Kaśnikowski Poland Piotr Matuszewski
Ukraine Oleg Prihodko		 2–6, 6–7(6–8)
Loss 0–3 Jan 2024 M15 Manacor, Spain WTT Hard Colombia Adrià Soriano Barrera Netherlands Michiel de Krom
Netherlands Ryan Nijboer		 4–6, 6–4, [9–11]
Win 1–3 Apr 2024 M25 Hammamet, Tunisia WTT Clay Belgium Raphaël Collignon Italy Luca Giacomini
Italy Giuseppe Tresca		 6–4, 7–5
Win 2–3 May 2024 M15 Villach, Austria WTT Clay Austria Nico Hipfl Germany Adrian Oetzbach
Slovakia Miloš Karol		 6–4, 6–3

References

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  1. ↑ Short, Joe (1 February 2019). "Next Roger Federer in Davis Cup squad as tennis legend misses Russia match". Express.co.uk.
  2. ↑ "Jerome Kym Junior Results".
  3. ↑ svizzera, RSI Radiotelevisione (2 February 2019). "Kym e Laaksonen riaccendono l'entusiasmo". rsi (in Italian).
  4. ↑ "Jerome Kym Wins the UniCredit Czech Open". 8 June 2024.
  5. ↑ "Jerome Kym wins the Dialectic Zug Open 2024; The 21-year-old from Fricktal won the biggest title of his professional career to date with a 6:4, 6:4 victory in the final against Argentinian Roman Andres Burruchaga (ATP 148).". 28 July 2024.
  6. ↑ "Jérôme Kym wins the Swiss showdown". 19 October 2024.
  7. ↑ "First ATP 500 maindraw and at home in Basel❤️💙". 20 October 2024.
  8. ↑ "Jérôme Kym in the main draw at the Swiss Indoors". blue News. 20 October 2024.
  9. ↑ "Andrey Rublev boosts ATP Finals hopes after winning his Swiss Indoors debut match". 21 October 2024.
  10. ↑ @TennisTV (July 15, 2025). "First Win Feels 🥹 Jerome Kym earns his first ATP Tour win with a 7-5 4-6 7-5 victory over Hemery, in front of his home crowd! @SwissOpenGstaad" (Tweet) – via X (formerly Twitter).
  11. ↑ "Jérôme Kym wins his first match on the ATP Tour". blue News. 15 July 2025.
  12. ↑ "Kym réussit sa première sur le circuit ATP – grosse déception pour Wawrinka-" (in French). 15 July 2025.
  13. ↑ "Kym porte haut les couleurs suisses à Gstaad" (in French). 17 July 2025.
  14. ↑ @ATPTour (July 17, 2025). "Kym Possible 🚀The home crowd goes wild as Jerome Kym battles past Passaro to seal a first-time place in the final 8! 🇨🇭@SwissOpenGstaad #SwissOpenGstaad" (Tweet) – via X (formerly Twitter).
  15. ↑ @ATPChallenger (August 22, 2025). "Grand Slam stage unlocked ✅ Coleman Wong, Martin Damm, Zsombor Piros, Jerome Kym and Ignacio Buse qualify for their first-ever Grand Slam main draw! #USOpen #ATPChallenger" (Tweet) – via X (formerly Twitter).
  16. ↑ "Two Swiss players make it through; Riedi and Kym are in the main draw of the US Open for the first time". 22 August 2025.
  17. ↑ "US Open Kym celebrates the biggest success of his career with a successful Grand Slam debut". 25 August 2025.
  18. ↑ "Surging Swiss Kym striking to the beat of his own drum". ATPTour. 27 August 2025.
  19. ↑ "Après Jérôme Kym, Leandro Riedi franchit aussi le 1er tour!" (in French). 25 August 2025.
  20. ↑ "Djokovic 'trying to solve the riddle' after comeback win". BBC Sport. 27 August 2025.
  21. ↑ "US Open, 3. Runde - Fritz eine Nummer zu gross: Kym nach heroischem Kampf draussen". Schweizer Radio und Fernsehen (SRF) (in German). Retrieved 2025-08-31.
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