is a Japanese professional tennis player. He has a career-high ATP singles ranking of No. 133 achieved on 21 September 2026, and a best doubles ranking of No. 749 achieved on 13 April 2026. He is currently the No. 3 singles player from Japan.
Sakamoto has won three singles titles on ATP Challenger Tour. He represents Japan at the Davis Cup.
Junior tennis Sakamoto had remarkable results on the ITF junior circuit, maintaining a 114–39 singles win-loss record. In March 2023, he earned the boys' doubles title at the Banana Bowl, a top junior-level event hosted in Criciúma, Brazil. Playing with Italian Federico Cinà as top-seeds, the pair defeated seventh seeds Daniil Sarksian and Yaroslav Demin in the final.
In January 2024, he won the J300 Traralgon International dropping only one set. He defeated second seed Nicolai Budkov Kjær in the final.
Later that month, Sakamoto won his most prestigious title at junior-level – the boys' singles event at the Australian Open, defeating Czech Jan Kumstát in the final.
He was also runner-up in the boys' doubles category at the 2024 French Open, with Federico Cinà. They lost to top seeds Nicolai Budkov Kjær and Joel Schwärzler in the final.
Later that season, Sakamoto was crowned a champion in doubles at the 2024 US Open, with Czech Maxim Mrva. The pair defeated Denis Peták and Flynn Thomas in the final.
He reached an ITF junior combined ranking of world No. 1 on 27 May 2024.
Career
2024: First Challenger title In March, Sakamoto received a wildcard for qualifying competition at the Miami Open, an ATP 1000-level event, but lost to Czech Vít Kopřiva in the first round.
At the age of 18 and five months, Sakamoto won his first title at the 2024 Yokkaichi Challenger becoming the second youngest Japanese titlist after Kei Nishikori to lift an ATP Challenger trophy in history. As a result he reached the top 500 in the rankings on 2 December 2024.
2025: Masters and top 175 debuts Sakamoto received a wildcard for the qualifying competition at the 2025 Australian Open.
Sakamoto made his Masters main draw debut at the 2025 Miami Open after qualifying, but lost to Alexandre Müller.
He won his second Challenger title at 2025 Cary Tennis Classic and reached new career-high ranking of world No. 206 on 14 July 2025, rising 85 positions up in the singles rankings. Sakamoto made history with winning his third title at home in Yokohama, becoming the first Japanese teenager to win three Challenger titles. As a result he reached the top 175 in the singles rankings at world No. 159 on 24 November 2025.
2026: Major debut, first ATP Tour and Masters wins Sakamoto made his major debut at the 2026 Australian Open after qualifying for the main draw, but lost to fellow qualifier Rafael Jódar in the first round. Having received a wildcard for the 2026 Miami Open, Sakamoto recorded his first ATP and Masters win defeating Aleksandar Kovacevic.
Performance timeline
Singles Current through the 2026 US Open.
Tournament202420252026SRW–LWin%Grand Slam tournamentsAustralian OpenAQ11R0 / 10–1French OpenAAQ10 / 00–0WimbledonAAQ30 / 00–0US OpenAQ22R0 / 11–1Win–loss0–00–01–20 / 21–2ATP 1000 tournamentsIndian Wells OpenAAQ10 / 00–0Miami OpenQ11R2R0 / 21–2Monte-Carlo MastersAAA0 / 00–0Madrid OpenAAQ20 / 00–0Italian OpenAAA0 / 00–0Canadian OpenAAA0 / 00–0Cincinnati OpenAAA0 / 00–0Shanghai MastersA1R0 / 10–1Paris MastersAA0 / 00–0Win–loss0–00–21–10 / 31–3
ATP Challenger Tour finals
Singles: 3 (3 titles) LegendATP Challenger Tour (3–0)
ResultW–LDateTournamentTierSurfaceOpponentScoreWin1–0Yokkaichi Challenger, JapanChallengerHard Christoph Negritu1–6, 6–3, 6–4Win2–0Cary Tennis Classic, USChallengerHard Liam Draxl6–1, 6–4Win3–0Yokohama Challenger, JapanChallengerHard Kaichi Uchida4–6, 7–6(7–4), 6–4
ITF World Tennis Tour finals
Doubles: 2 (1 title, 1 runner-up) LegendITF WTT (1–1)
ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreWin1–0M15 Sharm El Sheikh, EgyptWTTHard Jan Hrazdil Emile Hudd David Stevenson6–3, 6–7(8–10), [11–9]Loss1–1M15 Cervia, ItalyWTTClay Federico Bondioli Gianluca Cadenasso Jacopo Bilardowalkover
Junior Grand Slam finals
Singles: 1 (title) ResultYearTournamentSurfaceOpponentScoreWin2024Australian OpenHard Jan Kumstát3–6, 7–6(7–2), 7–5
Doubles: 2 (1 title, 1 runner-up) ResultYearTournamentSurfacePartnerOpponentsScoreLoss2024French OpenClay Federico Cinà Nicolai Budkov Kjær Joel Schwärzler4–6, 6–7(3–7)Win2024US OpenHard Maxim Mrva Denis Peták Flynn Thomas7–5, 7–6(7–1)
References
External links