Shintaro Mochizuki
Japanese tennis player (born 2003)
From Wikipedia, the free encyclopedia
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]
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JapanMochizuki at the 2023 French Open | |
| Country (sports) | Japan |
|---|---|
| Residence | Bradenton, Florida, United States |
| Born | 2 June 2003 Kawasaki, Japan |
| Height | 1.75 m (5 ft 9 in)[1] |
| Turned pro | 2019[1] |
| Plays | Right-handed (two-handed backhand) |
| Prize money | US$1,409,110 |
| Singles | |
| Career record | 7–28 |
| Career titles | 0 |
| Highest ranking | No. 92 (10 November 2025) |
| Current ranking | No. 130 (2 March 2026) |
| Grand Slam singles results | |
| Australian Open | 1R (2024, 2026) |
| French Open | 1R (2024) |
| Wimbledon | 2R (2025) |
| US Open | 2R (2025) |
| Doubles | |
| Career record | 1–3 |
| Career titles | 0 |
| Highest ranking | No. 371 (18 October 2021) |
| Current ranking | No. 489 (19 January 2026) |
| Last updated on: 2 March 2026. | |
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: Challenger title, Major debut, ATP semifinal, top 150
He won his first-ever trophy as a professional by winning the 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 Japan Open. 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]
2024-2025: First Major win and top 100 debut
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]
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]
Performance timeline
| W | F | SF | QF | #R | RR | Q# | DNQ | A | NH |
Singles
| Tournament | 2021 | 2022 | 2023 | 2024 | 2025 | SR | W–L | Win% |
|---|---|---|---|---|---|---|---|---|
| Grand Slam tournaments | ||||||||
| Australian Open | A | A | A | 1R | Q1 | 0 / 1 | 0–1 | 0% |
| French Open | A | A | Q1 | 1R | Q1 | 0 / 1 | 0–1 | 0% |
| Wimbledon | Q2 | A | 1R | Q1 | 2R | 0 / 2 | 1–2 | 33% |
| US Open | A | A | Q2 | Q3 | 2R | 0 / 1 | 1–1 | 50% |
| Win–loss | 0-0 | 0-0 | 0–1 | 0–2 | 2–2 | 0 / 5 | 2–5 | 29% |
| 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)
|
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
|---|---|---|---|---|---|---|---|
| Win | 1–0 | Apr 2023 | Barletta, Italy | Challenger | Clay |  Santiago Rodríguez Taverna |
6–1, 6–4 |
| Win | 2–0 | Jan 2025 | Nouméa, New Caledonia | Challenger | Hard |  Moerani Bouzige |
6–1, 6–3 |
| Loss | 2–1 | Feb 2025 | Bengalaru, India | Challenger | Hard |  Brandon Holt |
3–6, 3–6 |
| Loss | 2–2 | Jun 2025 | Nottingham, UK | Challenger | Grass |  Marin Čilić |
2–6, 3–6 |
Doubles: 2 (1 title, 1 runner-up)
|
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
|---|---|---|---|---|---|---|---|---|
| Loss | 0–1 | Feb 2020 | Cuernavaca, Mexico | Challenger | Hard |  Carlos Gómez-Herrera |
Luke Saville John-Patrick Smith |
3–6, 7–6(7–4), [5–10] |
| Win | 1–1 | Jan 2023 | Tenerife II, Spain | Challenger | Hard | Christian Harrison |
 Francesco Passaro Matteo Gigante |
6–4, 6–3 |
ITF World Tennis Tour finals
Singles: 1 (1 runner-up)
|
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
|---|---|---|---|---|---|---|---|
| Loss | 0–1 | Aug 2021 | M25 Grodzisk Mazowiecki, Poland | WTT | Clay |  Zsombor Piros |
3–6, 6–7(3–7) |
Doubles: 7 (7 titles)
|
|
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
|---|---|---|---|---|---|---|---|---|
| Win | 1–0 | Aug 2019 | M15 Cancún, Mexico | WTT | Hard | Thiago Agustín Tirante |
 Isaac Stoute Brandon Walkin |
6–7(4–7), 7–5, [10–4] |
| Win | 2–0 | Oct 2019 | M15 Changwon, South Korea | WTT | Hard | Naoki Nakagawa |
 Chung Hong Lee Jea-moon |
6–4, 6–4 |
| Win | 3–0 | Jan 2020 | M15 Cancún, Mexico | WTT | Hard | Alejo Lorenzo Lingua Lavallén |
Tanner Smith Jordi Arconada |
walkover |
| Win | 4–0 | Oct 2020 | M15 Sharm El Sheikh, Egypt | WTT | Hard | Rio Noguchi |
 Ryan Nijboer Gijs Brouwer |
6–2, 7–5 |
| Win | 5–0 | Nov 2020 | M15 Santo Domingo, Dominican Republic | WTT | Hard |  Nick Hardt |
 Gonzalo Lama Antonio Cayetano March |
6–3, 6–3 |
| Win | 6–0 | Dec 2020 | M15 Santo Domingo, Dominican Republic | WTT | Hard | Nick Hardt |
Nick Chappell Keegan Smith |
4–6, 7–6(7–2), [10–5] |
| Win | 7–0 | Apr 2021 | M15 Antalya, Turkey | WTT | Hard | Rio Noguchi |
 Constantin Schmitz 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 | 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. | Taylor Fritz |
10 | Japan Open, Japan | Hard | 2R | 0–6, 6–4, 7–6(7–2) | 215 |
- *As of 26 May 2024[update]
