Shintaro Mochizuki
Mochizuki at the 2023 French Open
Country (sports)  Japan
Residence Bradenton, Florida, United States
Born (2003-06-02) 2 June 2003 (age 23)
Kawasaki, Japan
Height 1.75 m (5 ft 9 in)[1]
Turned pro 2019[1]
Plays Right-handed (two-handed backhand)
Prize money US$1,625,147
Singles
Career record 7–31
Career titles 0
Highest ranking No. 92 (10 November 2025)
Current ranking No. 150 (22 June 2026)
Grand Slam singles results
Australian Open 1R (2024, 2026)
French Open 1R (2024)
Wimbledon 4R (2026)
US Open 2R (2025)
Doubles
Career record 1–3
Career titles 0
Highest ranking No. 371 (18 October 2021)
Current ranking —
Last updated on: 22 June 2026.

Shintaro Mochizuki (Japanese: 望月 慎太郎, Mochizuki Shintarō, born 2 June 2003) is a Japanese professional tennis player.[1] He has an ATP career-high singles ranking of world No. 92 on 10 November 2025 and a doubles ranking of No. 371 achieved on 18 October 2021. He is currently the No. 2 Japanese player.[2] Mochizuki became the first Japanese male player in history to win a Grand Slam boys’ singles title at 2019 Wimbledon.[3][4] Mochizuki achieved a career-high Junior ITF combined ranking of No. 1 on 15 July 2019.[5]

Early life

Shintaro Mochizuki was born in Kawasaki, Kanagawa, Japan. His name "Shintaro" was given by his father, inspired by the novelist and politician Shintaro Ishihara.[6]

He started playing tennis at the age of 3. As a fifth grader, he represented Kawasaki Municipal Mukai Elementary School at the 32nd First Life National Elementary School Tennis Championship and managed to reach the semifinals.[7]

At the age of 12, he passed the selection test for the Masaaki Morita Tennis Fund and went to the United States to train at the IMG Academy in Florida.[3][8][6] He began attending N High School in 2019.[9]

Career

2019: First Japanese man in a Junior major final

In 2019 Mochizuki won the Wimbledon title after becoming the first Japanese male player to reach a Grand Slam juniors singles final.[10][11][3] In September that year, he led the Japanese team to win the Junior Davis Cup in Orlando, Florida.[12]

2021: ATP and Masters debuts

In February, Mochizuki made his ATP main draw debut as a wildcard at the 2021 Singapore Tennis Open where he lost to Altug Celikbilek in straight sets.

In March, he qualified for his first ATP Masters 1000 main draw at the 2021 Miami Open having been given a wildcard for the qualifying competition.[13]

He received a wildcard for the qualifying event at the 2021 Wimbledon Championships where he defeated Hugo Gaston to reach the second qualifying round.[14]

2023-2024: Challenger title, Major debut, ATP semifinal, top 150

He won his first-ever trophy as a professional by winning the 2023 Open Città della Disfida Challenger in Barletta, Italy, defeating the Argentine Santiago Rodriguez Taverna in straight sets, becoming the fourth teenage Challenger champion in the season (after Fils, Van Assche and Medjedovic).[15] He reached the top 200 at world No. 198 on 12 June 2023. In July, he made his Grand Slam debut after qualifying for the main draw of the 2023 Wimbledon Championships, but lost in the first round to 16th seed Tommy Paul in straight sets. At the 2023 Hall of Fame Open he lost to Liam Broady also in the first round.

Ranked No. 215, he received a wildcard for the ATP 500 2023 Japan Championships. After nine attempts, he finally won his first match at the ATP Tour level, beating Tomás Martín Etcheverry in straight sets.[16] Next he defeated top seed Taylor Fritz for his first Top 10 win, to reach his first ATP tour-level quarterfinal.[17] In the quarterfinals, he defeated Alexei Popyrin to reach his first-ever ATP semifinal. He became the lowest-ranked Tokyo semifinalist since then-world No. 479 Kelly Jones in 1986.[18][19][20][21] As a result, he moved up 84 positions to World No. 131 in the rankings on 23 October 2023.[22] In November, following a quarterfinal showing at the Sydney Challenger he reached the top 130 in the rankings and 13th in the 2023 Next Generation ATP Finals race.[20]

He made his debut in the main draw at the 2024 Australian Open as a lucky loser,[23] but lost to Tomáš Macháč in straight sets. He also qualified for the main draw at the 2024 French Open.[24]

2025-2026: First Major wins and fourth round, top 100

In January 2025, Mochizuki won his second Challenger at the 2025 Open Nouvelle-Calédonie title defeating Moerani Bouzige in straight sets.[25][26] In June, Mochizuki reached the semifinals at the Lexus Ilkley Open[8] and the final of the 2025 Nottingham Open.[27] Following these good results in grass he qualified for the main draw at the 2025 Wimbledon Championships for the second time,[28][29][30] and recorded his first main draw Grand Slam win over fellow qualifier Giulio Zeppieri in a five sets match, over two days.[31] Following reaching the quarterfinals with wins over Arthur Cazaux and fourth seed Luciano Darderi at the 2025 Almaty Open, Mochizuki reached the top 100 in the singles rankings on 20 October 2025.[32]

In July 2026, ranked No. 151 Mochizuki reached a major fourth round for the first time in his career at the 2026 Wimbledon Championships, upsetting 23rd seed Rafael Jodar, after qualifying for the main draw, previously defeating Ethan Quinn and Max Basing in the second and first rounds respectively.[33]

Playing Style

Standing at only 5 foot 9, Mochizuki is not a prolific server. However, he is renowned for his low bouncing strokes and exceptional shotmaking.[34] His profile was highly anticipated during his time in Japan, though he has struggled in the ATP tour, with his playstyle contrasting the high spin, heavy-serve environment. [35]

Performance timeline

Key
W  F  SF QF #R RR Q# 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.

Singles

Tournament 2021 2022 2023 2024 2025 2026 SR W–L Win%
Grand Slam tournaments
Australian Open A A A 1R Q1 1R 0 / 2 0–2 0%
French Open A A Q1 1R Q1 Q1 0 / 1 0–1 0%
Wimbledon Q2 A 1R Q1 2R 4R 0 / 3 4–3 57%
US Open A A Q2 Q3 2R 0 / 1 1–1 50%
Win–loss 0-0 0-0 0–1 0–2 2–2 3–2 0 / 7 5–7 42%
ATP Masters 1000
Indian Wells Masters Q1 A A 1R A 0 / 1 0–1 0%
Miami Open 1R Q2 A Q1 Q2 0 / 1 0–1 0%
Monte Carlo Masters A A A A A 0 / 0 0–0  – 
Madrid Open A A A Q2 A 0 / 0 0-0  – 
Italian Open A A A A A 0 / 0 0–0  – 
Canadian Open A A A A 1R 0 / 1 0–1 0%
Cincinnati Masters A A A A Q2 0 / 0 0–0  – 
Shanghai Masters NH Q1 Q1 Q1 0 / 0 0–0  – 
Paris Masters A A A A A 0 / 0 0–0  – 
Win–loss 0–1 0–0 0–0 0–1 0–1 0 / 3 0–3 0%

ATP Challenger Tour finals

Singles: 4 (2 titles, 2 runner-ups)

Legend
ATP Challenger Tour (2–2)
Result W–L    Date    Tournament Tier Surface Opponent Score
Win 1–0 Apr 2023 Barletta, Italy Challenger Clay Argentina Santiago Rodríguez Taverna 6–1, 6–4
Win 2–0 Jan 2025 Nouméa, New Caledonia Challenger Hard Australia Moerani Bouzige 6–1, 6–3
Loss 2–1 Feb 2025 Bengalaru, India Challenger Hard United States Brandon Holt 3–6, 3–6
Loss 2–2 Jun 2025 Nottingham, UK Challenger Grass Croatia Marin Čilić 2–6, 3–6

Doubles: 2 (1 title, 1 runner-up)

Legend
ATP Challenger Tour (1–1)
Result W–L    Date    Tournament Tier Surface Partner Opponents Score
Loss 0–1 Feb 2020 Cuernavaca, Mexico Challenger Hard Spain Carlos Gómez-Herrera Australia Luke Saville
Australia John-Patrick Smith		 3–6, 7–6(7–4), [5–10]
Win 1–1 Jan 2023 Tenerife II, Spain Challenger Hard United States Christian Harrison Italy Francesco Passaro
Italy Matteo Gigante		 6–4, 6–3

ITF World Tennis Tour finals

Singles: 1 (1 runner-up)

Legend
ITF WTT (0–1)
Result W–L    Date    Tournament Tier Surface Opponent Score
Loss 0–1 Aug 2021 M25 Grodzisk Mazowiecki, Poland WTT Clay Hungary Zsombor Piros 3–6, 6–7(3–7)

Doubles: 7 (7 titles)

Legend
ITF WTT (7–0)
Finals by surface
Hard (7–0)
Clay (0–0)
Result W–L    Date    Tournament Tier Surface Partner Opponents Score
Win 1–0 Aug 2019 M15 Cancún, Mexico WTT Hard Argentina Thiago Agustín Tirante United Kingdom Isaac Stoute
Australia Brandon Walkin		 6–7(4–7), 7–5, [10–4]
Win 2–0 Oct 2019 M15 Changwon, South Korea WTT Hard Japan Naoki Nakagawa South Korea Chung Hong
South Korea Lee Jea-moon		 6–4, 6–4
Win 3–0 Jan 2020 M15 Cancún, Mexico WTT Hard Argentina Alejo Lorenzo Lingua Lavallén United States Tanner Smith
United States Jordi Arconada		 walkover
Win 4–0 Oct 2020 M15 Sharm El Sheikh, Egypt WTT Hard Japan Rio Noguchi Netherlands Ryan Nijboer
Netherlands Gijs Brouwer		 6–2, 7–5
Win 5–0 Nov 2020 M15 Santo Domingo, Dominican Republic WTT Hard Dominican Republic Nick Hardt Chile Gonzalo Lama
Ecuador Antonio Cayetano March		 6–3, 6–3
Win 6–0 Dec 2020 M15 Santo Domingo, Dominican Republic WTT Hard Dominican Republic Nick Hardt United States Nick Chappell
United States Keegan Smith		 4–6, 7–6(7–2), [10–5]
Win 7–0 Apr 2021 M15 Antalya, Turkey WTT Hard Japan Rio Noguchi Germany Constantin Schmitz
Lebanon Benjamin Hassan		 7–6(7–2), 6–2

Junior Grand Slam finals

Singles: 1 (1 title)

Result Year Tournament Surface Opponent Score
Win 2019 Wimbledon Grass Spain Carlos Gimeno Valero 6–3, 6–2

Wins over top 10 players

  • He has a 1–1 win-loss record against players who were, at the time the match was played, ranked in the top 10.
Season 2023 Total
Wins 1 1
# Player Rank Event Surface Rd Score SMR
2023
1. United States Taylor Fritz 10 Japan Open, Japan Hard 2R 0–6, 6–4, 7–6(7–2) 215
*As of 26 May 2024

References

  1. ^ a b c "Shintaro Mochizuki". ATP Tour. Retrieved 19 October 2023.
  2. ^ "Japan | ATP Rankings (Singles)". ATP Tour.
  3. ^ a b c "Mochizuki makes history for Japan with junior title at Wimbledon". reuters.com. 14 July 2019.
  4. ^ "Mochizuki: I nearly quit tennis to become a baseball player". itftennis.com. 22 November 2019.
  5. ^ "Mochizuki ITF Juniors Singles Overview". itftennis.com.
  6. ^ a b "日本男子ジュニア初４強の望月慎太郎、決勝進出逃す" [Shintaro Mochizuki, the first Japanese junior male to reach the semi-finals, fails to advance to the finals]. nikkansports.com (in Japanese). 8 June 2019. Retrieved 19 October 2023.
  7. ^ "第32回第一生命全国小学生テニス選手権大会 男子シングルス" [The 32nd Dai-ichi Life National Elementary School Tennis Championships, Boys' Singles] (PDF). jta-tennis.or.jp (in Japanese). Retrieved 19 October 2023.
  8. ^ a b "Mochizuki, former junior No. 1 & conqueror of Alcaraz, forging Challenger path". ATP Tour. 13 June 2025.
  9. ^ "N高・望月慎太郎さん、「全仏オープン・ジュニア」でベスト4" [Shintaro Mochizuki of N High School reaches semifinals at French Open Junior]. nnn.ed.jp (in Japanese). 17 June 2019. Retrieved 19 October 2023.
  10. ^ "Mochizuki reaches junior boys singles final at Wimbledon". Japan Today. 13 July 2019.
  11. ^ "Shintaro Mochizuki makes history for Japan at Wimbledon". Asian Tennis Federation - ATF Official Website. 19 July 2019.
  12. ^ "2019 JUNIOR DAVIS CUP BY BNP PARIBAS FINALS". itftennis.com.
  13. ^ "Former No. 1 Andy Murray, returning from surgery, accepts wild card into Miami Open". Miami Herald. 15 March 2021. Archived from the original on 20 July 2021.
  14. ^ "Shintaro Mochizuki reaches the qualifying round of qualifying round at Wimbledon". ubitennis.net. 23 June 2021.
  15. ^ "Mochizuki Becomes Fourth Teenage Challenger Champion Of 2023". ATP Tour. 10 April 2023. Retrieved 14 January 2025.
  16. ^ "Ben Shelton Reaches R2 In Tokyo, Shinataro Mochizuki Earns First Win". ATP Tour. 17 October 2023. Retrieved 10 January 2024.
  17. ^ "Japanese Wild Card Shintaro Mochizuki Defeats Taylor Fritz In Tokyo". ATP Tour. 19 October 2023. Retrieved 10 January 2024.
  18. ^ "PREVIEW | 2023 Japan Open Semi-Finals featuring SHELTON v GIRON and MOCHIZUKI v KARATSEV". Tennisuptodate.com. 20 October 2023. Retrieved 10 January 2024.
  19. ^ "Shintaro Mochizuki Beats Popyrin, Sets Aslan Karatsev SF Clash In Tokyo". ATP Tour. 20 October 2023. Retrieved 10 January 2024.
  20. ^ a b "Five Things To Know About Shintaro Mochizuki". NextGenATPFinals. 20 October 2023. Retrieved 10 December 2025.
  21. ^ "As Shintaro Mochizuki reminds us, this is the time of year for surprises and Cinderellas". Tennis.com. 21 October 2023. Retrieved 10 January 2024.
  22. ^ "Ranking Reaction: Ben Shelton breaks into Top 15 after winning first ATP title in Tokyo". Tennis.com. 23 October 2023. Retrieved 10 January 2024.
  23. ^ "Five Challenger players to watch in Melbourne". ATP Tour. 13 January 2024.
  24. ^ "Reigning #NextGenATP champ Medjedovic qualifies for Roland Garros". ATP Tour. 23 May 2024.
  25. ^ @ATPChallenger (4 January 2025). "Shintaro Mochizuki shines in Noumea 💫 The 21-year-old scores a 6-1, 6-3 win over Bouzige to win a second career title!#ATPChallenger" (Tweet) – via X (formerly Twitter).
  26. ^ "Fonseca, Sinner are only Next Gen ATP Finals champions to win ensuing event". ATP Tour. 4 January 2025. Retrieved 25 January 2025.
  27. ^ @ATPChallenger (20 June 2025). "First final on grass ✅ Shintaro Mochizuki powers past Smith 6-2, 6-2 to book his place in the Nottingham title match #ATPChallenger" (Tweet) – via X (formerly Twitter).
  28. ^ "These are all the players qualified for Wimbledon 2025 from the qualifying stage". puntodebreak.com. 26 June 2025.
  29. ^ "What were the key Wimbledon qualifying results?". ATP Tour. 26 June 2025.
  30. ^ "Mochizuki back at Wimbledon in search of maiden Grand Slam match-win". 27 June 2025.
  31. ^ @Wimbledon (1 July 2025). "What it means! 🇯🇵 The 2019 Boys' Singles Champion Shintaro Mochizuki claims his first main draw Grand Slam win after defeating Giulio Zeppieri 2-6, 3-6, 6-3, 7-6 (6), 7-5 in R1. #Wimbledon" (Tweet) – via X (formerly Twitter).
  32. ^ "Former junior Wimbledon champion is set to break into the ATP top 100 for the first time in his career". tennishead.net. 16 October 2025.
  33. ^ "Mochizuki, World No. 151, upsets Jodar to set Sinner clash at Wimbledon". ATPTour. 3 July 2026.
  34. ^ "Mochizuki reveals the key to his victory over Jódar and is already thinking about Sinner". Puntodebreak.com. Retrieved 4 July 2026.
  35. ^ "Five Things To Know About Shintaro Mochizuki | ATP Tour | Tennis". ATP Tour. Archived from the original on 10 August 2025. Retrieved 4 July 2026.