Murkel Alejandro Dellien Velasco (born 16 September 1997) is a Bolivian tennis player. He has a career-high ATP singles ranking of No. 168 achieved on 15 July 2024 and a career-high ATP doubles ranking of No. 174 achieved on 1 April 2024. He is the current No. 2 Bolivian tennis player. Dellien represents Bolivia at the Davis Cup, where he has a W/L record of 2–4.
College career Dellien played college tennis at Wichita State.
Professional career In 2021 Dellien defeated Zizou Bergs in his first Davis Cup rubber.
In July 2024, he won his maiden Challenger title at the 2024 Ion Țiriac Challenger in Brașov, Romania with a win over Dmitry Popko in the final. With his brother Hugo winning the title at the 2024 Iași Open, also in Romania, the Delliens became the first brothers to win a Challenger title in the same season since the Cerúndolos in 2022.
Personal life He is the younger brother of fellow tennis player Hugo Dellien. Their father, Hugo Eduardo Dellien, represented Beni Department as a substitute member of the Chamber of Deputies for the Social Democratic Power alliance from 2006 to 2010.
ATP Challenger Tour finals
Singles: 4 (1 title, 3 runner-up) LegendATP Challenger Tour (1–3)
ResultW–LDateTournamentTierSurfaceOpponentScoreLoss0–1Tigre, ArgentinaChallengerClay Juan Manuel Cerúndolo6–4, 4–6, 2–6Loss0–2Santa Cruz de la Sierra, BoliviaChallengerClay Camilo Ugo Carabelli4–6, 2–6Win1–2Brașov, RomaniaChallengerClay Dmitry Popko6–3, 7–5Loss1–3Sofia, BulgariaChallengerClay Zdeněk Kolář2–6, 2–6
Doubles: 10 (3 titles, 7 runner-ups) LegendATP Challenger Tour (3–7)
ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreLoss0–1Corrientes, ArgentinaChallengerClay Nicolás Álvarez Guido Andreozzi Guillermo Durán5–7, 2–6Loss0–2Prague, Czech RepublicChallengerClay Adrian Andreev Victor Vlad Cornea Andrew Paulson3–6, 1–6Win1–2Coquimbo, ChileChallengerClay Valerio Aboian Tomás Farjat Facundo Juárez7–6(7–4), 6–0Loss1–3Antofagasta, ChileChallengerClay Luciano Darderi Boris Arias Federico Zeballos7–5, 4–6, [8–10]Win2–3Punta del Este, UruguayChallengerClay Federico Agustín Gómez Guido Andreozzi Guillermo Durán6–3, 6–2Loss2–4Santa Cruz de la Sierra, BoliviaChallengerClay Hugo Dellien Andrea Collarini Renzo Olivo7–5, 4–6, [8–10]Win3–4Buenos Aires, ArgentinaChallengerClay Facundo Mena Felipe Meligeni Alves Marcelo Zormann1–6, 6–2, [12–10]Loss3–5Cordenons, ItalyChallengerClay Boris Arias Andrew Paulson Michael Vrbenský4–6, 2–6Loss3–6Sion, SwitzerlandChallengerClay Facundo Mena Maximilian Neuchrist David Poljak4–6, 4–6Loss3–7Buenos Aires, ArgentinaChallengerClay Federico Zeballos Mariano Kestelboim Santiago Rodríguez Taverna4–6, 6–4, [5–10]
ITF Futures/World Tennis Tour finals
Singles: 10 (6 titles, 4 runner-ups) LegendITF WTT (6–4)
ResultW–LDateTournamentTierSurfaceOpponentScoreLoss0–1M15 Naples, USAWTTClay Pedro Boscardin Dias3–6, 6–7(5–7)Win1–1M15 Quito, EcuadorWTTClay Arklon Huertas del Pino7–6(7–1), 6–3Win2–1M15 Quito, EcuadorWTTClay Juan Bautista Otegui6–3, 6–2Loss2–2M25 Maribor, SloveniaWTTClay Hernán Casanova4–6, 3–6Win3–2M15 Santa Cruz de la Sierra, BoliviaWTTClay Conner Huertas del Pino6–0, 6–2Win4–2M15 Santa Cruz de la Sierra, BoliviaWTTClay Franco Roncadelli7–6(7–5), 6–3Loss4–3M25 Río Cuarto, ArgentinaWTTClay Pol Martín Tiffon6–7(7–9), 6–3, 5–7Win5–3M25 Punta del Este, UruguayWTTClay Gonzalo Bueno6–4, 3–6, 7–5Win6–3M25 Punta del Este, UruguayWTTClay Álvaro Guillén Meza6–1, 6–0Loss6–4M25 Rio de Janeiro, BrazilWTTClay Eduardo Ribeiro7–5, 2–6, 1–6
Doubles: 18 (12 titles, 6 runner-ups) LegendITF Futures/WTT (12–6)Finals by surfaceHard (1–0)Clay (11–6)Grass (0–0)Carpet (0–0)
ResultW–LDateTournamentTierSurfacePartnerOpponentsScoreLoss0–1Bolivia F2, BoliviaFuturesClay Hugo Dellien Facundo Mena Sebastián Serrano3–6, 5–7Loss0–2Bolivia F3, BoliviaFuturesClay Hugo Dellien Franco Feitt José María Páez3–6, 3–6Win1–2M25 Wichita, USAWTTHard Nicolás Acevedo John McNally Benjamin Sigouin6–4, 2–6, [12–10]Win2–2M15 Ibagué, ColombiaWTTClay Boris Arias Alejandro Gómez Alejandro Hoyos6–4, 3–6, [10–4]Win3–2M25 Lima, PeruWTTClay Jorge Panta Cayetano March Pol Martín Tiffon7–6(7–4), 7–6(7–3)Loss3–3M15 Córdoba, ArgentinaWTTClay Boris Arias Ignacio Carou Alejo Lorenzo Lingua Lavallén4–6, 7–5, [4–10]Win4–3M25 Rosario, ArgentinaWTTClay Arklon Huertas del Pino Tomás Farjat Ignacio Monzón6–3, 6–3Win5–3M25 Rosario, ArgentinaWTTClay Arklon Huertas del Pino Román Andrés Burruchaga Juan Ignacio Galarza6–3, 7–5Loss5–4M15 Quito, EcuadorWTTClay Arklon Huertas del Pino Igor Gimenez Nicolas Zanellato2–6, 6–7(5–7)Win6–4M15 Quito, EcuadorWTTClay Arklon Huertas del Pino Alejandro Mendoza Jorge Panta6–3, 7–5Win7–4M25 Koksijde, BelgiumWTTClay Hernán Casanova Zvonimir Babić Simon Freund6–1, 4–6, [10–5]Win8–4M25 San Miguel de Tucumán, ArgentinaWTTClay Valerio Aboian Franco Emanuel Egea Gabriel Alejandro Hidalgo6–7(5–7), 7–5, [10–7]Loss8–5M25 Jablonec nad Nisou, Czech RepublicWTTClay Pedro Sakamoto Sebastian Fanselow Dominik Kellovský2–6, 4–6Win9–5M25 Córdoba, SpainWTTClay Valerio Aboian Imanol López Morillo Benjamín Winter López6–3, 6–7(4–7), [11–9]Loss9–6M25 Kassel, GermanyWTTClay Stefan Latinović Jiří Barnat Patrik Rikl4–6, 4–6Win10–6M25 Rio de Janeiro, BrazilWTTClay Ignacio Carou Christian Oliveira Paulo André Saraiva dos SantosWalkoverWin11–6M15 Villa Constitución, ArgentinaWTTClay Lorenzo Joaquín Rodríguez Segundo Goity Zapico Tadeo Meneo7–6(7–1), 6–2Win12–6M25 Wetzlar, GermanyWTTClay Tomás Farjat Edison Ambarzumjan Madhwin Kamath6–2, 6–4
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