Ysaline Bonaventure (; born 29 August 1994) is a Belgian former professional tennis player. On 6 March 2023, she reached her best singles ranking of world No. 81. On 1 February 2016, she peaked at No. 57 in the doubles rankings. Bonaventure won two doubles titles on the WTA Tour, as well as 12 singles and 14 doubles titles on the ITF Women's Circuit.

Playing for Belgium Fed Cup team, Bonaventure had a win–loss record of 10–9 (as of March 2024). She was selected for the Fed Cup team for the first time in 2012 when she played a doubles match alongside Alison Van Uytvanck in the World Group play-offs.

Career 2015-16: Two WTA Tour titles and top 60 in doubles Bonaventure lost in the first round of qualifying at the 2015 Australian Open and French Open. At the 2015 Wimbledon Championships, she also lost in the first round of qualifying, beaten in three sets by Michelle Larcher de Brito. She reached the third round of qualifying at the US Open of that year.

She won two WTA Tour doubles titles that year, showing her ability in doubles, her focus slowly shifting towards singles after 2015. She subsequently reached a career-high ranking in doubles of No. 57 in February 2016.

2018-20: Top 150 & major debut She lost again in the third and final round of qualifying at Roland Garros in 2018, before making her major main-draw debut in 2019, at the Australian Open and then at Wimbledon. She also reached as a qualifier the quarterfinals in Rabat, before losing to compatriot Alison Van Uytvanck, and the third round in Indian Wells, where she defeated wildcard Taylor Townsend and 28th seed Donna Vekić, before losing to Karolína Plíšková.

In 2020, she finally won a match in the main draw of a major at the US Open in New York.

2022: Top 100 At the French Open, she qualified to make her debut at this major thus finally completing the set of main-draw appearances at all four major tournaments.

She reached the top 100 on 31 October 2022, at world No. 94.

2023: First WTA Tour semifinal At the Auckland Open, she reached her first WTA Tour semifinal as a qualifier, defeating eighth seed Rebecca Marino and third seed Leylah Fernandez. She made her second quarterfinal of the season at the Monterrey Open with a win over qualifiers Despina Papamichail and Kamilla Rakhimova. She lost to eventual champion Donna Vekić in three sets and recorded a new career-high of world No. 84, on 6 March 2023.

2024–2025: Knee surgery and retirement Having withdrawn during qualifying at the 2024 Australian Open due to a knee injury which subsequently required surgery, Bonaventure won just one of eight matches following her return to competitive action and announced her final retirement from professional tennis in March 2025.

Performance timelines

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

Singles Current through the 2023 French Open. Tournament2015201620172018201920202021202220232024SRWin%Grand Slam tournamentsAustralian OpenQ1Q2AQ21RQ21RQ21RQ20 / 30–3French OpenQ1Q2AQ3Q1AQ11R1RA0 / 20–2WimbledonQ1Q1AQ21RNHQ2Q21RA0 / 20–2US OpenQ3Q2Q1Q2Q12RQ2Q2AQ10 / 11–1Win–loss0–00–00–00–00–21–10–10–10–30–00 / 81–8WTA 1000Dubai / Qatar OpenAAAAAQ1Q1AAA0 / 00–0Indian Wells OpenAAAA3RNHAA1RA0 / 22–2Miami OpenAAAQ2ANHAAQ1A0 / 00–0Madrid OpenAAAAANHAAQ1A0 / 00–0Italian OpenAAAAAAAA1RA0 / 10–1Canadian OpenAAAAQ1NHAAAA0 / 00–0Cincinnati OpenAAAAAQ2AAAA0 / 00–0Career statisticsTournaments130517353103Career total: 50Overall win–loss0–10–30–04–510–172–43–53–48–110–00 / 5030–50Win(%)Career total: Year-end ranking15623218115011512222896191933$1,417,110

Doubles Tournament2015201620172018 ...2023 SR Win% Australian OpenA2RAAA0 / 11–1 French Open2RAAA2R0 / 22–2 Wimbledon1RAA1R1R0 / 30–3 US OpenAAAAA0 / 00–0Win–loss1–21–10–00–11–20 / 63–6

WTA Tour finals Doubles: 2 (2 titles) Legend WTA 1000WTA 500WTA 250 (2–0) Finals by surfaceHard (1–0)Clay (1–0) ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreWin 1–0 Rio Open, Brazil International Clay Rebecca Peterson Irina-Camelia Begu María Irigoyen 3–0 ret.Win 2–0 Katowice Open, Poland International Hard (i) Demi Schuurs Gioia Barbieri Karin Knapp 7–5, 4–6, [10–6]

ITF Circuit finals Singles: 25 (12 titles, 13 runner-ups) Legend$100,000 tournaments (0–2)$80,000 tournaments (0–1)$50/60,000 tournaments (4–1)$25,000 tournaments (3–4)$10/15,000 tournaments (5–5)Finals by surfaceHard (4–8)Clay (7–5)Carpet (1–0) ResultW–LDateTournamentTierSurfaceOpponentScoreLoss 0–1 ITF Amiens, France10,000 Clay Isabella Shinikova 3–6, 6–0, 3–6Loss 0–2 ITF Le Havre, France10,000 Clay Myrtille Georges 7–5, 5–7, 0–6Win 1–2 ITF Meppel, Netherlands10,000 Clay Julia Kimmelmann 6–2, 6–4Loss 1–3 ITF Knokke, Belgium10,000 Clay Jessica Moore 1–6, 6–7(4)Win 2–3 ITF Maaseik, Belgium10,000 Clay Natalia Orlova 6–2, 6–1Loss 2–4 ITF Bron, France10,000 Hard Maryna Zanevska 2–6, 1–6Win 3–4 May 2013ITF Båstad, Sweden10,000 Clay Ellen Allgurin 6–1, 6–2Win 4–4 Jun 2013ITF Amstelveen, Netherlands10,000 Clay Cindy Burger 6–4, 6–2Loss 4–5 Sep 2013ITF Berlin, Germany15,000 Clay Diana Šumová 3–6, 5–7Loss 4–6 Jan 2014Open Andrézieux-Bouthéon, France25,000 Hard (i) Timea Bacsinszky 1–6, 1–6Win 5–6 Jun 2014ITF Kristinehamn, Sweden25,000 Clay Marina Melnikova 6–3, 6–3Loss 5–7 Aug 2014ITF Westende, Belgium25,000 Hard Sara Sorribes Tormo 2–6, 0–6Loss 5–8 Oct 2014ITF Florence, United States25,000 Hard CiCi Bellis 2–6, 1–6Win 6–8 Jul 2015ITF Darmstadt, Germany25,000 Clay Dalila Jakupović 6–3, 7–6Win 7–8 Sep 2015Internacional de Monterrey, Mexico50,000 Hard Montserrat González 6–1, 6–2Win 8–8 Feb 2016AK Ladies Open, Germany25,000 Carpet (i) Arantxa Rus 6–3, 6–3Win 9–8 Apr 2017ITF Antalya, Turkey15,000 Clay Yuuki Tanaka 6–4, 6–2Loss 9–9 Jul 2017President's Cup, Kazakhstan100,000+H Hard Zhang Shuai 3–6, 4–6Loss 9–10 Oct 2017ITF Florence, United States25,000 Hard Taylor Townsend 1–6, 5–7Win 10–10 Nov 2017Toronto Challenger, Canada60,000 Hard (i) Patty Schnyder 7–6(3), 6–3Win 11–10 Jan 2020Open Andrézieux-Bouthéon, France60,000 Hard (i) Arantxa Rus 6–4, 7–6(3)Win 12–10 Jan 2022Bendigo International, Australia60,000+H Hard Victoria Jiménez Kasintseva 6–3, 6–1Loss 12–11 Jul 2022Reinert Open, Germany100,000 Hard Linda Nosková 1–6, 3–6Loss 12–12 Oct 2022Hamburg Ladies & Gents Cup, Germany60,000 Hard (i) Rebeka Masarova 4–6, 3–6Loss 12–13 Oct 2022Internationaux de Poitiers, France80,000 Hard (i) Petra Marčinko 3–6, 6–7(2)

Doubles: 20 (14 titles, 6 runner-ups) Legend$100,000 tournaments (0–1)$80,000 tournaments (1–0)$60,000 tournaments (4–1)$25,000 tournaments (6–2)$10/15,000 tournaments (3–2)Finals by surfaceHard (7–2)Clay (6–4)Carpet (1–0) ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreWin 1–0 ITF Meppel, Netherlands10,000 Clay Nicolette van Uitert Marritt Boonstra Vivian Heisen 6–1, 4–6, [10–7]Win 2–0 ITF Breda, Netherlands10,000 Clay Isabella Shinikova Carolin Daniels Xenia Knoll 6–4, 7–6(5)Loss 2–1 May 2013ITF Båstad, Sweden10,000 Clay Maria Mokh Cindy Burger Milana Špremo 1–6, 4–6Win 3–1 Sep 2013ITF Berlin, Germany15,000 Clay Cornelia Lister Lenka Kunčíková Karolína Stuchlá 6–4, 3–6, [10–5]Loss 3–2 Jun 2014Bredeney Ladies Open, Germany25,000 Clay Elitsa Kostova Kristina Barrois Tatjana Maria 2–6, 2–6Loss 3–3 Jun 2014ITF Kristinehamn, Sweden25,000 Clay Sandra Zaniewska Kateryna Bondarenko Cornelia Lister w/oWin 4–3 Aug 2014ITF Koksijde, Belgium25,000 Clay Richèl Hogenkamp Bernarda Pera Demi Schuurs 6–4, 6–4Win 5–3 Aug 2014ITF Westende, Belgium25,000 Hard Elise Mertens Marina Melnikova Evgeniya Rodina 6–2, 6–2Win 6–3 Oct 2014Saguenay Challenger, Canada50,000 Hard (i) Nicola Slater Sonja Molnar Caitlin Whoriskey 6–4, 6–4Win 7–3 Mar 2015ITF Curitiba, Brazil25,000 Clay Rebecca Peterson Beatriz García Vidagany Florencia Molinero 4–6, 6–3, [10–5]Win 8–3 Sep 2015Internacional Monterrey, Mexico50,000 Hard Elise Mertens Marina Melnikova Mandy Minella 6–4, 3–6, [11–9]Win 9–3 Oct 2015Abierto Victoria, Mexico50,000 Hard Elise Mertens María Irigoyen Barbora Krejčíková 6–4, 4–6, [10–6]Win 10–3 Feb 2016AK Ladies Open, Germany25,000 Carpet (i) Xenia Knoll Deniz Khazaniuk Maria Marfutina 6–1, 6–4Loss 10–4 Apr 2017ITF Antalya, Turkey15,000 Clay Marie Benoît Emma Laine Yuuki Tanaka 6–3, 1–6, [4–10]Loss 10–5 Jul 2017President's Cup, Kazakhstan100,000 Hard Naomi Broady Natela Dzalamidze Veronika Kudermetova 2–6, 0–6Win 11–5 Sep 2017Batumi Ladies Open, Georgia25,000 Hard Viktória Kužmová Tatia Mikadze Sofia Shapatava 6–1, 6–3Loss 11–6 Nov 2017Toronto Challenger, Canada60,000 Hard (i) Victoria Rodríguez Alexa Guarachi Erin Routliffe 6–7(4), 6–3, [4–10]Win 12–6 Jan 2018Open Andrézieux-Bouthéon, France60,000 Hard (i) Bibiane Schoofs Camilla Rosatello Kimberley Zimmermann 4–6, 7–5, [10–7]Win 13–6 Feb 2018GB Pro-Series Glasgow, UK25,000 Hard (i) Valentini Grammatikopoulou Dalma Gálfi Katarzyna Piter 7–5, 6–4Win 14–6 Sep 2021Internacional de Valencia, Spain80,000 Clay Ekaterine Gorgodze Ángela Fita Boluda Oksana Selekhmeteva 6–2, 2–6, [10–6]

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