Marat Mansurovych Deviatiarov (; born 19 April 1994 in Kharkiv) is a Ukrainian former tennis player.

Career Deviatiarov has a career-high singles ranking by the ATP of 538, achieved on 25 May 2015. He also has a career-high ATP doubles ranking of 315, achieved on 25 September 2017.

Deviatiarov has represented Ukraine at the Davis Cup, where he has a win/loss record of 1–0.

Future and Challenger finals

Singles: 7 (1–6) LegendATP Challenger Tour (0–0)ITF Futures Tour (1–6)Finals by surfaceHard (1–6)Clay (0–0)

ResultW–LDateTournamentTierSurfaceOpponentScoreLoss0–1Ukraine F1, CherkasyFuturesHard (i) Grzegorz Panfil3–6, 3–6Loss0–2Turkey F25, IstanbulFuturesHard Rémi Boutillier6–7(3–7), 4–6Loss0–3Estonia F3, TallinnFuturesHard (i) Niels Lootsma2–6, 4–6Loss0–4Egypt F19, Sharm El SheikhFuturesHard Youssef Hossam3–6, 2–6Loss0–5Israel F4, Ramat HaSharonFuturesHard Alessandro Bega3–6, 1–6Loss0–6M15 Kiryat Shmona, IsraelWorld Tennis TourHard Alessandro Bega2–6, 6–1, 4–6Win1–6M15 Doha, QatarWorld Tennis TourHard Adam Moundir6–2, 6–3

Doubles: 45 (20–25) LegendATP Challenger Tour (0–0)ITF Futures Tour (20–25)Finals by surfaceHard (12–19)Clay (7–5)Carpet (1–0)

ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreLoss0–1Armenia F1, YerevanFuturesClay Vladyslav Manafov Michael Linzer Yannik Reuter6–7(6–8), 3–6Loss0–2Ukraine F3, CherkassyFuturesHard Pirmin Hänle Vladyslav Manafov Filip Veger2–6, 3–6Loss0–3France F9FuturesClay Pablo Galdón Benjamin Balleret Jonathan Eysseric6–7(7–9), 5–7Loss0–4Turkey F17FuturesHard Andrei Plotniy Artur Dubinski Vladimir Kruk6–7(15–17), 6–3, [9–11]Win1–4Turkey F18FuturesHard Baris Ergüden Cem Ilkel Efe Yurtacan7–5, 6–2Loss1–5Ukraine F7FuturesHard Jaime Pulgar-Garcia Vladyslav Manafov Volodymyr Uzhylovskyi5–7, 2–6Loss1–6Lithuania F1FuturesClay Jérôme Inzerillo Maxim Dubarenco Peter Kobelt6–4, 6–7(2–7), [8–10]Win2–6Turkey F28FuturesHard Alexios Halebian Juan Sebastián Gómez Gabriel Trujillo Soler6–4, 6–7(2–7), [10–2]Win3–6Turkey F7, AntalyaFuturesClay Tristan-Samuel Weissborn Ruan Roelofse Tucker Vorster7–6(7–5), 6–2Loss3–7Turkey F8, AntalyaFuturesHard Tristan-Samuel Weissborn Ruan Roelofse Tucker Vorster7–6(7–5), 6–7(4–7), [10–12]Loss3–8Turkey F16, AntalyaFuturesHard Michael Geerts Yannick Jankovits Hugo Nys6–7(6–8), 1–6Win4–8Ukraine F2, CherkassyFuturesHard Maxime Janvier Vladyslav Manafov Volodymyr Uzhylovskyi6–2, 6–2Loss4–9Ukraine F3, CherkassyFuturesHard Volodymyr Uzhylovskyi Bogdan Didenko Levar Harper-Griffith4–6, 2–6Win5–9Ukraine F4, CherkassyFuturesClay Libor Salaba Mauricio Perez-Mota François-Arthur Vibert6–2, 6–1Win6–9Ukraine F5, CherkassyFuturesClay Libor Salaba Vladyslav Manafov Volodymyr Uzhylovskyi1–6, 6–4, [10–7]Win7–9Ukraine F6, CherkassyFuturesClay Libor Salaba Vitalii Shcherba Vitaliy Sachko6–4, 6–3Win8–9Azerbaijan F5, BakuFuturesCarpet Danylo Kalenichenko Alexander Igoshin Yan Sabanin6–4, 6–4Loss8–10Ukraine F6, KyivFuturesHard Francesco Vilardo Lukas Mugevicius Vladyslav Manafov2–6, 2–6Win9–10Estonia F4, PärnuFuturesHard Aleksandr Vasilenko Vladimir Ivanov Kenneth Raismaw/oLoss9–11Turkey F48, AntalyaFuturesHard Alexandar Lazov Tuna Altuna Cem Ilkel4–6, 2–6Loss9–12Turkey F5, AntalyaFuturesHard Yuichi Ito Michal Konecny Matěj Vocel3–6, 6–3, [7–10]Loss9–13Portugal F2, FaroFuturesHard Antoine Bellier James Marsalek Lucas Miedler7–5, 1–6, [6–10]Loss9–14Portugal F5, Quinta Da MarinhaFuturesClay Gonçalo Oliveira Clemens Geens Jeroen Vanneste1–6, 6–4, [4–10]Loss9–15Egypt F18, Sharm El SheikhFuturesHard Issam Haitham Taweel Youssef Hossam Junior A. Ore2–6, 3–6Win10–15Egypt F19, Sharm El SheikhFuturesHard Tomas Papik Benjamin Lock Nathaniel Lammons6–4, 1–6, [10–5]Win11–15Turkey F27, IstanbulFuturesClay Sarp Ağabigün Alexander Igoshin Vasko Mladenov6–2, 7–6(7–5)Win12–15Turkey F28, ErzurumFuturesHard Vladyslav Manafov Alon Elia Igor Smilansky5–7, 6–1, [10–5]Loss12–16Estonia F4, PärnuFuturesHard Alexander Igoshin Ivan Liutarevich Denys Mylokostov6–4, 3–6, [10–12]Loss12–17Israel F2, Ramat HaSharonFuturesHard Volodymyr Uzhylovskyi Harri Heliövaara Patrik Niklas-Salminen3–6, 2–6Loss12–18Egypt F12, Sharm El SheikhFuturesHard Vladyslav Manafov Teymuraz Gabashvili Lucas Miedler4–6, 0–6Loss12–19Spain F16, Palma del RioFuturesHard Evan Hoyt Mick Lescure Eduardo Struvay5–7, 4–6Win13–19Spain F17, BakioFuturesHard Evan Hoyt Sergey Betov Ivan Gakhov6–7(4–7), 7–5, [10–5]Loss13–20France F13, AjaccioFuturesHard Benjamin Lock Mick Lescure Yannick Mertens5−7, 6–7(6–8)Win14–20Egypt M15, Sharm El SheikhWorld Tour TennisHard Jakub Paul Daniel Michalski Kacper Żuk6−3, 6–4Loss14–21M15 Casale Monferrato, ItalyWorld Tour TennisClay Francesco Vilardo Francesco Forti Mattia Frinzi4−6, 4–6Win15–21M15 Castelo Branco, PortugalWorld Tour TennisHard Eduardo Struvay Francisco Dias Goncalo Falcao6−4, 7–5Win16–21M15 Chitila, RomaniaWorld Tour TennisClay Amaury Delmas Vladimir Filip Luca George Tatomir7−6(7–5), 6–3Loss16–22M15 Kiryat Shmona, IsraelWorld Tour TennisHard Takuto Niki Federico Bertuccioli Andrea Picchione6−4, 4–6, [12−14]Loss16–23M15 St. Petersburg, RussiaWorld Tour TennisHard Alexandr Cozbinov Andrew Paulson Patrik Rikl6−4, 4–6, [8−10]Loss16–24Egypt M15, Sharm El SheikhWorld Tour TennisHard Volodymyr Uzhylovskyi Ryan Nijboer Neil Oberleitner0−6, 7–5, [6−10]Win17–24M15 Jerusalem, IsraelWorld Tour TennisHard Alexandr Cozbinov Julian Cash Felix Corwinw/oWin18–24M15 Ulcinj, MontenegroWorld Tour TennisClay Max Houkes Andrea Basso Gianmarco Ferrari7−5, 6−1Win19–24Egypt M15, Sharm El SheikhWorld Tour TennisHard Volodymyr Uzhylovskyi Pijus Vaitiekunas Simonas Zukauskas6−4, 6−1Win20–24M15 Doha, QatarWorld Tour TennisHard Hsu Yu-hsiou Huang Tsung-hao Saba Purtseladze6−1, 6−0Loss20–25M15 Monastir, TunesiaWorld Tour TennisHard Loic Cloes Naoki Tajima Kaito Uesugiw/o

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