is a Japanese tennis player. She reached a career-high singles ranking of No. 115 by the WTA on 14 September 2026, and a best doubles ranking of No. 341, achieved on 6 October 2025.

Career 2022: WTA Tour debut Sakatsume made her WTA Tour main-draw debut at the 2022 Championnats de Granby, after entering the singles tournament as a lucky loser, but was defeated by Jasmine Paolini in the first round.

2023: BJK, WTA 500 debut and first tour match win She made her debut for the Japan Billie Jean King Cup team on 13 April 2023 in a tie against Uzbekistan, defeating Sabrina Olimjanova, and two days later defeated Jiang Xinyu from China, registering her first BJK Cup wins.

Having made it through qualifying, Sakatsume reached the second round at the Japan Women's Open, recording her first WTA Tour win over Alexandra Eala, before losing to third seed Wang Xinyu.

She made her WTA 500 debut at the 2023 Pan Pacific Open as a lucky loser, but lost to Linda Nosková.

2025: First WTA Tour quarterfinal As a qualifier, Sakatsume reached her maiden WTA quarterfinal at the 2025 Hong Kong Open, defeating fourth seed Sofia Kenin for her first win against a top-100 ranked player and then overcoming wildcard entrant Eudice Chong, before losing to fifth seed Maya Joint in three sets.

2026: Major, WTA 1000 debut and first win Sakatsume made her Grand Slam tournament debut at the 2026 Australian Open, after qualifying for the main draw.

She made her WTA 1000 debut at the Indian Wells Open and recorded her first win at the 1000-level over Alycia Parks, as a qualifier. Ranked at a career-high of No. 125, Sakatsume also entered the main draw of the 2026 Nottingham Open after qualifying, but lost to Jéssica Bouzas Maneiro.

Performance timeline

Only main-draw results in WTA Tour, Grand Slam tournaments, Billie Jean King Cup, United Cup, Hopman Cup and Olympic Games are included in win–loss records.

Singles Current through the 2026 US Open. Tournament20222023202420252026SRW–LGrand Slam tournamentsAustralian OpenAAQ1A1R0 / 10–1French OpenAQ1Q1AQ30 / 00–0WimbledonAQ1AAQ10 / 00–0US OpenAQ3AA2R0 / 11–1Win–loss0–00–00–00–01–20 / 21–2WTA 1000Indian WellsAAAA2R0 / 11–1National representationBillie Jean King CupAPOAAA0 / 02–0Career statisticsTournaments12012total: 6Overall win–loss0–13–20–02–11–20 / 66–6Year-end ranking294178271178$779,607

ITF Circuit finals Singles: 17 (8 titles, 9 runner-ups) LegendW100 tournamentsW80 tournamentsW75 tournamentsW50 tournamentsW25/35 tournamentsW15 tournamentsFinals by surfaceHard (8–7) Clay (0–1)Carpet (0–1) ResultW–LDateTournamentTierSurfaceOpponentScoreWin 1–0 Sep 2018ITF Kyoto, JapanW15 Hard Haruna Arakawa 3–6, 6–3, 6–1Win 2–0 Dec 2019ITF Nonthaburi, ThailandW15 Hard Nigina Abduraimova 7–6(3), 5–7, 6–1Win 3–0 May 2021ITF Monastir, TunisiaW15 Hard Sakura Hosogi 6–4, 7–5Win 4–0 Jun 2021ITF Monastir, TunisiaW15 Hard Sakura Hosogi 7–5, 7–5Loss 4–1 Aug 2021ITF Monastir, TunisiaW15 Hard Ayumi Koshiishi 3–6, 6–7(3)Loss 4–2 Jul 2022ITF Charleston Pro, United StatesW100 Clay Carol Zhao 6–3, 4–6, 4–6Loss 4–3 Mar 2023ITF Toronto, CanadaW25 Hard (i) Katherine Sebov 4–6, 6–7(4)Loss 4–4 Mar 2023ITF Fredericton, Canada W25 Hard (i) Gabriela Knutson 4–6, 4–6Win 5–4 May 2023Kangaroo Cup Gifu, JapanW80 Hard Katie Boulter 7–5, 6–3Win 6–4 Jun 2024ITF Taipei, Taiwan W35 Hard Kyoka Okamura 6–4, 6–0Loss 6–5 Oct 2024Playford International, AustraliaW75 Hard Maddison Inglis 6–7(7), 7–5, 1–6Loss 6–6 Nov 2024ITF Caloundra, AustraliaW50 Hard Priscilla Hon 4–6, 5–7Loss 6–7 Mar 2025ITF Kyoto, Japan W50 Hard (i) Sara Saito 4–6, 6–7(2)Loss 6–8 Mar 2025Kōfu International Open, Japan W50 Hard Haruka Kaji 6–7(2), 3–6Loss 6–9 May 2025Fukuoka International, JapanW35 Carpet Emerson Jones 6–7(4), 4–6Win 7–9 Aug 2025Saskatoon Challenger, Canada W50 Hard Anca Todoni 7–6(1), 6–3Win 8–9 Nov 2025Takasaki Open, JapanW100 Hard Ku Yeon-woo 6–3, 1–6, 6–4

Doubles: 5 (2 titles, 3 runner-ups) LegendW100 tournamentsW50 tournamentsW35 tournamentsW15 tournamentsFinals by surfaceHard (2–2)Clay (0–1) ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreLoss 0–1 Sep 2020Porto Open, PortugalW15 Hard Júlia Payola Carolina Alves Marina Bassols Ribera 3–6, 6–4, [7–10]Win 1–1 Jun 2021ITF Monastir, TunisiaW15 Hard Sakura Hosogi Emma Davis Lauren Proctor 7–5, 2–6, [10–8]Loss 1–2 May 2024Wiesbaden Open, GermanyW100 Clay Anita Wagner Laura Pigossi Samantha Murray Sharan 5–7, 2–6Loss 1–3 Sep 2024ITF Redding, United StatesW35 Hard Clervie Ngounoue Ayana Akli Eryn Cayetano 2–6, 2–6Win 2–3 Oct 2025Rancho Santa Fe Open, United StatesW50 Hard Wakana Sonobe Fiona Crawley Jaeda Daniel 7–6(5), 3–6, [10–5]

Notes

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