Amarissa Kiara Tóth (born 10 February 2003) is a Hungarian tennis player.

Tóth has career-high WTA rankings of 236 in singles, attained on 2 March 2026, and 264 in doubles, achieved on 3 October 2022.

She made her WTA Tour main-draw debut at the 2021 Budapest Grand Prix, where she received a wildcard into the doubles tournament.

During her round of 32 match at the 2023 Budapest Grand Prix against Zhang Shuai, Tóth erased a ball mark after Zhang's shot was called out by the umpire despite repeated calls by Zhang for Tóth to not smear the mark. Zhang insisted the shot was in, which seemed to be the case, and retired from the match shortly after the incident citing a severe panic attack. Tóth was condemned by many players and fans alike for her allegedly unsportsmanlike behavior. A few days after the incident, Tóth apologized for her actions.

ITF Circuit finals Singles: 12 (8 titles, 4 runner-ups) LegendW75 tournamentsW50 tournamentsW35 tournamentsW15 tournamentsFinals by surfaceClay (8–4) ResultW–LDateTournamentTierSurfaceOpponentScoreLoss 0–1 Oct 2021ITF Antalya, TurkeyW15 Clay Sonay Kartal 5–7, 5–7Win 1–1 Aug 2022ITF Kottingbrunn, AustriaW15 Clay Carolina Kuhl 6–3, 7–5Loss 1–2 Dec 2022ITF Antalya, TurkeyW15 Clay Anastasiya Soboleva 4–6, 6–2, 3–6Win 2–2 Dec 2023ITF Antalya, TurkeyW15 Clay Jana Bojović 6–1, 6–2Win 3–2 Dec 2023ITF Antalya, TurkeyW15 Clay Jana Bojović 6–2, 6–0Win 4–2 Jan 2024ITF Antalya, TurkeyW15 Clay Andreea Prisăcariu 4–6, 6–2, 6–2Loss 4–3 Feb 2024ITF Antalya, TurkeyW15 Clay Daniela Vismane 1–0 ret.Win 5–3 Apr 2024ITF Osijek, CroatiaW15 Clay Denisa Hindová 6–2, 6–1Win 6–3 Nov 2024ITF Antalya, TurkeyW15 Clay Ștefania Bojică 6–4, 2–0 ret.Win 7–3 Feb 2025ITF Antalya, TurkeyW35 Clay Irina Bara 6–3, 6–3Loss 7–4 Mar 2025Székesfehérvár Open, HungaryW75 Clay (i) Sinja Kraus 6–2, 5–7, 3–6Win 8–4 May 2025ITF Otočec, SloveniaW50 Clay Sofia Costoulas 6–3, 6–3

Doubles: 28 (16 titles, 12 runner-ups) LegendW75 tournamentsW50 tournamentsW25/35 tournamentsW15 tournamentsFinals by surfaceHard (0–1)Clay (16–11) ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreWin 1–0 Jun 2021ITF Antalya, TurkeyW15 Clay Başak Eraydın Jessie Aney Christina Rosca 4–6, 6–1, [10–7]Win 2–0 Jul 2021ITF Antalya, TurkeyW15 Clay Julie Belgraver Christina Rosca Ani Vangelova 6–2, 7–5Loss 2–1 Sep 2021ITF Dijon, FranceW15 Clay Lucie Wargnier Naïma Karamoko Xenia Knoll 2–6, 2–6Win 3–1 Oct 2021ITF Antalya, TurkeyW15 Clay Dorka Drahota-Szabó Romana Čisovská Adrienn Nagy 6–3, 2–6, [10–4]Loss 3–2 Nov 2021ITF Antalya, TurkeyW15 Hard Tamara Čurović Diana Shnaider Anastasiya Soboleva 2–6, 0–6Win 4–2 Dec 2021ITF Antalya, TurkeyW15 Clay Ksenia Laskutova Claudia Hoste Ferrer Carlota Martinez Cirez 6–0, 7–5Win 5–2 Dec 2021ITF Antalya, TurkeyW15 Clay Ksenia Laskutova Mariana Dražić Jazmín Ortenzi 6–4, 6–2Loss 5–3 Dec 2021ITF Antalya, TurkeyW15 Clay Ksenia Laskutova Oana Gavrilă Arina Vasilescu 6–1, 4–6, [10–12]Loss 5–4 Feb 2022ITF Antalya, TurkeyW15 Clay Angelica Moratelli Mariana Dražić Katharina Hobgarski 5–7, 4–6Win 6–4 Mar 2022ITF Antalya, TurkeyW25 Clay Diana Shnaider Amina Anshba Maria Timofeeva 6–4, 6–2Win 7–4 Mar 2022ITF Antalya, TurkeyW15 Clay Ksenia Laskutova Sapfo Sakellaridi Anastasia Zolotareva 7–6(4), 1–6, [10–7]Loss 7–5 May 2022ITF Antalya, TurkeyW15 Clay İlay Yörük Viktoriya Petrenko Doğa Türkmen 5–7, 7–6(3), [12–14]Win 8–5 Jul 2022ITF Kottingbrunn, AustriaW15 Clay Doğa Türkmen Fernanda Labraña Dalila Spiteri w/oWin 9–5 Aug 2022ITF Mogyoród, HungaryW25 Clay Ilona Georgiana Ghioroaie Carole Monnet Marine Partaud 7–5, 6–0Loss 9–6 Sep 2022ITF Vienna, AustriaW25 Clay Živa Falkner Lena Papadakis Anna Sisková 6–7(8), 4–6Win 10–6 Dec 2022ITF Antalya, TurkeyW15 Clay Mariana Dražić Eleni Christofi Anna Ureke 1–6, 7–5, [10–4]Loss 10–7 Dec 2022ITF Antalya, TurkeyW15 Clay Mariana Dražić Yana Karpovich Daria Lodikova 5–7, 2–6Win 11–7 Jun 2023ITF Annenheim, AustriaW25 Clay Anna Zyryanova Michaela Bayerlová Jenny Dürst 6–4, 2–6, [10–8]Win 12–7 Aug 2023ITF Osijek, CroatiaW25 Clay Ilona Georgiana Ghioroaie Luisa Meyer auf der Heide Dimitra Pavlou 6–2, 6–4Loss 12–8 Aug 2023ITF Erwitte, GermanyW25 Clay Ekaterina Ovcharenko Nika Radišić Anita Wagner 5–7, 6–7(4)Win 13–8 Dec 2023ITF Antalya, TurkeyW15 Clay Rada Zolotareva Rikke de Koning Madelief Hageman 6–1, 6–4Win 14–8 Jul 2024Zagreb Open, CroatiaW50 Clay Živa Falkner Lia Karatancheva Sapfo Sakellaridi 6–4, 6–3Loss 14–9 Aug 2024ITF Trieste, ItalyW35 Clay Živa Falkner Anastasia Abbagnato Anita Wagner 3–6, 6–4, [9–11]Win 15–9 Sep 2024Šibenik Open, CroatiaW75 Clay Živa Falkner Raluca Șerban Anca Todoni 2–1 ret.Win 16–9 Nov 2025ITF Antalya, TurkeyW35 Clay Amina Anshba Ilinca Amariei Lucija Ćirić Bagarić 7–5, 7–5Loss 16–10 Jan 2026ITF Antalya, TurkeyW35 Clay Lucija Ćirić Bagarić Darya Astakhova Andreea Prisăcariu 2–6, 6–3, [8–10]Loss 16–11 May 2026ITF Portorož, SloveniaW50 Clay Alevtina Ibragimova Angelica Moratelli Anastasia Tikhonova 6–3, 3–6, [4–10]Loss 16–12 June 2026ITF Gdańsk, PolandW50 Clay Zhibek Kulambayeva Weronika Falkowska Georgina García Pérez 6–3, 5–7, [9–11]

Junior Grand Slam finals Doubles: 1 (runner-up) ResultDateTournamentSurfacePartnerOpponentsScore Loss 2021 French Open Clay Maria Bondarenko Alex Eala Oksana Selekhmeteva 0–6, 5–7

National representation Billie Jean King Cup Tóth made her debut for the Hungary Billie Jean King Cup team in 2022, while the team was competing in the Europe/Africa Zone Group I. Group membershipWorld GroupWorld Group Play-offWorld Group IIWorld Group II Play-offEurope/Africa Group (3–2)

Matches by surfaceHard (0–0)Clay (3–2)

Matches by typeSingles (0–0)Doubles (3–2)

Matches by settingIndoors (0–0)Outdoors (3–2)

Doubles (3–2) EditionStageDateLocationAgainstSurfacePartnerOpponentsW/LScore2022Z1 RR 13 April 2022Antalya (TUR) DenmarkClay Anna Bondár Sofia Samavati Johanne SvendsenW 6–2, 6–4 15 April 2022 EstoniaRéka Luca Jani Anet Angelika Koskel Katriin SaarW 6–1, 6–3Z1 PO 16 April 2022 Slovenia Kaja Juvan Lara SmejkalL walkover2023Z1 RR 11 April 2023Antalya (TUR) EgyptClayRéka Luca Jani Lamis Alhussein Abdel Aziz Rana Sherif AhmedW 6–1, 6–2Z1 PO 15 April 2023 Sweden Jacqueline Cabaj Awad Kajsa Rinaldo PerssonL 2–6, 2–6

Controversy In the first round of singles at the 2023 Budapest Grand Prix, Tóth rubbed out a contested ball mark with her foot after her opponent, Zhang Shuai, had remonstrated with the umpire over the line call. The mark appeared to show that Zhang’s shot had landed in, and she argued with the umpire for six minutes over the decision to award the point to Tóth. After the match continued and final decision of the point was decided by the umpire, Toth walked up to the mark and erased it. When Tóth was asked by Zhang why she did that, Tóth replied, "Because you’re making problems, that’s why." Eventually, Zhang retired from her match against Tóth, citing a severe panic attack incited by Tóth's actions and a hostile crowd. Upon Zhang’s retirement, Tóth openly celebrated; it was her first WTA Tour singles main draw, and the situation ended up giving Tóth her first and last career victory.

Tóth's actions of erasing the ball mark, allegedly mocking Zhang’s outburst, and celebrating at her retirement sparked backlash among the tennis community. Current players described them as "disgusting" (Ajla Tomljanović), "[I give] zero respect to her" (Daria Saville), "a quick way to lose respect from your peers" (Ellen Perez), "one of the worst line calls and poorly handled situations" (Jamie Loeb), "very bad sportsmanship" (Daria Kasatkina), "not acceptable" (Ons Jabeur), "another level of unsportsmanlike conduct" (Victoria Azarenka), and that Tóth "should be banned from the tour" (Maria Sakkari). Former world No. 1, Martina Navratilova, described Tóth as "a bad sport".

Tóth subsequently lost her next match to Kateryna Baindl, and after several days gave a public apology for her actions.

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