is an American-born Japanese professional tennis player. She reached her career-high rankings of world No. 4 in doubles on 21 March 2022 and No. 116 in singles on 14 July 2025. She won her first major title at the 2022 French Open, alongside Wesley Koolhof in mixed doubles. Partnering with Shuko Aoyama, she reached the final at the 2023 Australian Open, in addition to the semifinals at the 2021 Wimbledon Championships, the 2022 and 2026 Australian Opens, and at the 2021 WTA Finals.
Shibahara has won eleven doubles titles on the WTA Tour, including two WTA 1000, the 2021 Miami Open and the 2023 Canadian Open.
She made her Billie Jean King Cup debut for Japan in 2020, and also participated in the 2020 Olympic Games in Tokyo. Until July 2019, Shibahara represented her country of birth, the United States.
College In 2016, she graduated from Palos Verdes Peninsula High School and attended UCLA before turning pro after her sophomore season.
Professional 2016: Major debut
Shibahara made her major main-draw debut at the US Open in the doubles event, partnering with Jada Hart as wildcard entrants, where they lost to seventh seeds Sania Mirza and Barbora Strýcová in the first round. Later in the tournament, Shibahara and Hart won the girls' doubles title.
2019: Doubles focus, Aoyama partnership Shibahara played her first five doubles tournaments of the year with Hayley Carter winning two titles and reaching another final. This raised her ranking from No. 205 to an entry into the top 100, with a doubles ranking of world No. 98 on May 20.
Shibahara then played tournaments with eight other partners, before playing her first tournament with Shuko Aoyama in August at the Silicon Valley Classic in San Jose, where they reached the final. Shibahara said, "Our chemistry was spot on from the beginning, where I would set her up from the baseline and she just moves all over the net".
Shibahara and Aoyama played five more tournaments together in 2019, winning their first two titles at the Tianjin Open (Shibahara's first WTA Tour-level title) and Kremlin Cup in Moscow. By the end of the year, Shibahara's WTA doubles ranking was world No. 31.
In singles, she started the year playing a mixture of ITF and WTA Challenger tournaments. Following a quarterfinal result at the 100k Vancouver Open, her singles ranking reached a career-high of world No. 416, on 19 August 2019.
2020–2021: WTA 1000 title & WTA Finals semis Shibahara reached the 2020 French Open quarterfinals, partnering Aoyama. Shibahara won her maiden WTA 1000 title at the 2021 Miami Open with Aoyama. The Japanese pair represented Japan at the 2020 Summer Olympics, where they lost in the first round to eventual silver medalists Belinda Bencic and Viktorija Golubic. Shinahara also reached the semifinals at Wimbledon and of the WTA Finals, seeded No. 2. She won four more titles, three being at the WTA 500 level, during 2021 with Aoyama. In singles, Shibahara also made her WTA Tour-level main draw debut in Cleveland as a lucky loser but lost to Bethanie Mattek-Sands.
2022: French mixed title, doubles No. 4 At the Australian Open, she reached the semifinals of a major for the second time in her career, partnering again with Shuko Aoyama. Later, she set a new career-high ranking of No. 4, on 21 March 2022, after making the Indian Wells Open final where she partnered with Asia Muhammad.
At the French Open, she won the first major title of her career in mixed doubles, partnering with Wesley Koolhof. She became the first Japanese player in 25 years to win the mixed doubles championship in Paris, since Rika Hiraki and Mahesh Bhupathi took home the title in 1997.
2023: Australian doubles final, Canada doubles title At the Australian Open, she reached the semifinals of a major for the third time in her career, partnering again with Shuko Aoyama. The pair defeated second-seeded pair of Coco Gauff and Jessica Pegula to reach their first Grand Slam tournament final. However, they were defeated in straight sets by defending champions, Krejčíková and Siniaková.
She won her ninth title at the Rosmalen Open and her first WTA 1000 title at the Canadian Open, partnering Aoyama.
She qualified for the singles main draw of the WTA 1000 Guadalajara Open but lost to Karolína Plíšková. In doubles, the pair Shibahara and Aoyama qualified for the WTA Finals for the second time with a seeding of No. 3 but lost in the round robin stage.
2024–2026: US Open singles debut After entering the main draw at the 2024 Prague Open as a lucky loser, Shibahara won her first WTA Tour singles match defeating Tamara Korpatsch, in three sets, her second career victory over a top 100 player. She also made her Grand Slam tournament singles debut at the 2024 US Open, after qualifying into the main draw. She recorded her first singles win at a major over Australian Daria Saville, before losing to world No. 1, Iga Świątek in the second round, in straight sets. She also qualified for the main draw at the WTA 500 Guadalajara Open for the second time and defeated another Australian and fellow qualifier, Kimberly Birrell, for her second WTA Tour win.
She won her 11th doubles title at the 2024 Japan Women's Open in Osaka, partnering Laura Siegemund. Shibahara and Siegemund ended runners-up at the Pan Pacific Open, losing to Shuko Aoyama and Eri Hozumi in the final.
At the 2025 ATX Open, Shibahara qualified for the main draw and reached her first singles tour-level quarterfinal defeating Kaja Juvan and again Kimberly Birrell. As a result, she returned to world No. 134 in the singles rankings on 3 March 2025. She also qualified for a consecutive year at the 2025 US Open in singles.
In doubles at the 2026 Australian Open she reached the semifinals with Vera Zvonareva.
Performance timelines
Only main-draw results in WTA Tour, Grand Slam tournaments, Billie Jean King Cup and Olympic Games are included in win–loss records and career statistics.
Doubles Current through the 2023 Indian Wells Open. Tournament2016...20192020202120222023202420252026SRW–LWin%Grand Slam tournaments Australian OpenAA3RQFSFF3R2RSF0 / 721–7 French OpenAAQF2R3R2R3R1RA0 / 69–6 WimbledonAANHSF3R1R3R1RA0 / 58–5 US Open1R1R2R3R3R1R2R2R2R0 / 98–9Win–loss0–10–15–310–410–46–47–43–45–20 / 2746–27National representation Summer OlympicsANH1R NH0 / 10–1Year-end championships WTA FinalsDNQNHSFDNQ0 / 12–2WTA 1000 tournamentsDubai / Qatar OpensAA1R2RQFAA0 / 31–3Indian Wells OpenAANHSFFSFSF1RA0 / 512–5Miami OpenAAANHW2R1RAAA1 / 35–2Madrid OpenAAANH1RA1RAAA0 / 20–2Italian OpenAASFSFAQFAAA0 / 37–3Canadian OpenAAANH2R2RWAAA1 / 36–2Cincinnati OpenAAA2RQF2R1RA1RA0 / 52–5Guadalajara OpenNHA2RAA0 / 10–1Wuhan OpenA1RNHAA0 / 10–1China OpenASFNH1RAA0 / 23–2Career statisticsTournaments11211211717Career total: 74Titles021502Career total: 10Finals041514Career total: 15Overall win–loss0–122–1017–1039–1730–1629–2410 / 74137–78Win %Year-end ranking106131235221441115$2,610,949
Mixed doubles Tournaments2021202220232024SRW–LWin% Australian Open2RQF1R2R0 / 44–4 French OpenAW1R2R1 / 36–2 Wimbledon2R2R2RQF0 / 45–4 US Open2RQFSFA0 / 36–3Win–loss3–310–34–44–31 / 1421–13
Grand Slam tournament finals Women's doubles: 1 (runner-up) ResultYearTournamentSurfacePartnerOpponentsScoreLoss 2023Australian Open Hard Shuko Aoyama Barbora Krejčíková Kateřina Siniaková 4–6, 3–6
Mixed doubles: 1 (title) ResultYearTournamentSurfacePartnerOpponentsScoreWin 2022 French Open Clay Wesley Koolhof Ulrikke Eikeri Joran Vliegen 7–6(7–5), 6–2
Other significant finals WTA 1000 tournaments Doubles: 3 (2 titles, 1 runner-up) ResultDateTournamentSurfacePartnerOpponentsScoreWin 2021Miami Open Hard Shuko Aoyama Hayley Carter Luisa Stefani 6–2, 7–5Loss 2022Indian Wells Open Hard Asia Muhammad Xu Yifan Yang Zhaoxuan 5–7, 6–7(4–7)Win 2023Canadian Open Hard Shuko Aoyama Desirae Krawczyk Demi Schuurs 6–4, 4–6, [13–11]
WTA Tour finals Doubles: 19 (11 titles, 8 runner-ups) LegendGrand Slam (0–1)WTA 1000 (2–1)WTA 500 (5–4)WTA 250 (4–2)Finals by surfaceHard (9–5)Clay (0–2)Grass (2–1)Finals by settingOutdoor (9–8)Indoor (2–0)
ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreLoss0–1Copa Colsanitas, ColombiaInternationalClay Hayley Carter Zoe Hives Astra Sharma1–6, 2–6Loss0–2Silicon Valley Classic, United StatesPremierHard Shuko Aoyama Nicole Melichar Květa Peschke4–6, 4–6Win1–2Tianjin Open, ChinaInternationalHard Shuko Aoyama Nao Hibino Miyu Kato6–3, 7–5Win2–2Kremlin Cup, RussiaPremierHard (i) Shuko Aoyama Kirsten Flipkens Bethanie Mattek-Sands6–2, 6–1Win3–2St. Petersburg Trophy, RussiaPremierHard (i) Shuko Aoyama Kaitlyn Christian Alexa Guarachi4–6, 6–0, [10–3]Win4–2Abu Dhabi Open, U.A.E.WTA 500Hard Shuko Aoyama Hayley Carter Luisa Stefani7–6(5), 6–4Win5–2Yarra Valley Classic, AustraliaWTA 500Hard Shuko Aoyama Anna Kalinskaya Viktória Kužmová6–3, 6–4Win6–2Miami Open, United StatesWTA 1000Hard Shuko Aoyama Hayley Carter Luisa Stefani6–2, 7–5Win7–2Eastbourne International, United KingdomWTA 500Grass Shuko Aoyama Nicole Melichar Demi Schuurs6–1, 6–4Win8–2Tennis in Cleveland, United StatesWTA 250Hard Shuko Aoyama Christina McHale Sania Mirza7–5, 6–3Loss8–3Indian Wells Open, USWTA 1000Hard Asia Muhammad Xu Yifan Yang Zhaoxuan5–7, 6–7(4)Loss8–4Australian Open, AustraliaGrand SlamHard Shuko Aoyama Barbora Krejčíková Kateřina Siniaková4–6, 3–6Loss8–5Apr 2023Charleston Open, USWTA 500Clay Giuliana Olmos Danielle Collins Desirae Krawczyk 6–0, 4–6, [12–14]Win9–5Rosmalen Open, NetherlandsWTA 250Grass Shuko Aoyama Viktória Hrunčáková Tereza Mihalíková6–3, 6–3Win10–5Aug 2023Canadian Open, CanadaWTA 1000Hard Shuko Aoyama Desirae Krawczyk Demi Schuurs6–4, 4–6, [13–11]Loss10–6Oct 2023Zhengzhou Open, ChinaWTA 500Hard Shuko Aoyama Gabriela Dabrowski Erin Routliffe 2–6, 4–6Win11–6Japan Women's OpenWTA 250Hard Laura Siegemund Cristina Bucșa Monica Niculescu3–6, 6–2, [10–2]Loss11–7Pan Pacific Open, JapanWTA 500Hard Laura Siegemund Shuko Aoyama Eri Hozumi4–6, 6–7(4)Loss11–8Jun 2025Nottingham Open, UKWTA 250Grass Anna Danilina Laura Siegemund Beatriz Haddad Maia3–6, 2–6
WTA 125 finals Doubles: 4 (2 titles, 3 runner-ups) ResultW–LDateTournamentSurfacePartnerOpponentsScoreWin 1–0 Newport Beach Challenger, US Hard Hayley Carter Taylor Townsend Yanina Wickmayer 6–3, 7–6(1)Loss 1–1 Houston Challenger, US Hard Sharon Fichman Ellen Perez Luisa Stefani 6–1, 4–6, [5–10]Loss 1–2 Mar 2025Puerto Vallarta Open, Mexico Hard Maya Joint Hanna Chang Christina McHale 6–2, 2–6, [7–10]Loss 1–3 Canberra International, Australia Hard Vera Zvonareva Maria Kozyreva Iryna Shymanovich 7–6(11–9), 5–7, [8–10]Win 2–3 ENKA Ladies Open, Turkey Hard Vera Zvonareva Tatiana Prozorova Alexandra Shubladze 6–3, 3–6, [10–8]
ITF Circuit finals
Singles: 6 (1 title, 5 runner-ups) LegendW100 tournaments (0–2)W75 tournaments (0–3)W35 tournaments (1–0)Finals by surfaceHard (1–4)Clay (0–1) ResultW–LDateTournamentTierSurfaceOpponentScoreWin 1–0 Feb 2024ITF Spring, United StatesW35 Hard Iva Jovic 6–2, 4–6, 6–3Loss 1–1 Apr 2024Tokyo Open, JapanW100 Hard Maddison Inglis 4–6, 6–3, 2–6Loss 1–2 Sep 2024Rancho Santa Fe Open, United StatesW75 Hard Iva Jovic 3–6, 3–6Loss 1–3 Apr 2025Tokyo Open, JapanW100 Hard Wakana Sonobe 4–6, 7–6(1), 3–6Loss 1–4 May 2025Prague Open, CzechiaW75 Clay Francesca Jones 3–6, 4–6Loss 1–5 Mar 2026Indoor Championships, JapanW75 Hard (i) Hayu Kinoshita 5–7, 1–6
Doubles: 10 (8 titles, 2 runner-ups) LegendW100 tournaments (1–0)W60 tournaments (3–1)W25 tournaments (4–1)Finals by surfaceHard (7–1)Grass (0–1)Carpet (1–0)