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)

Legend
Legend ATP Challenger Tour (1–3)
ATP Challenger Tour (1–3)
ResultW–LDateTournamentTierSurfaceOpponentScore
Loss0–1Jan 2023Tigre, ArgentinaChallengerClayArgentina Juan Manuel Cerúndolo6–4, 4–6, 2–6
Loss0–2Mar 2024Santa Cruz de la Sierra, BoliviaChallengerClayArgentina Camilo Ugo Carabelli4–6, 2–6
Win1–2Jul 2024Brașov, RomaniaChallengerClayKazakhstan Dmitry Popko6–3, 7–5
Loss1–3Aug 2025Sofia, BulgariaChallengerClayCzech Republic Zdeněk Kolář2–6, 2–6

Doubles: 9 (3 titles, 6 runner-ups)

Legend
Legend ATP Challenger Tour (3–6)
ATP Challenger Tour (3–6)
ResultW–LDateTournamentTierSurfacePartnerOpponentsScore
Loss0–1Jun 2022Corrientes, ArgentinaChallengerClayPeru Nicolás ÁlvarezArgentina Guido Andreozzi Argentina Guillermo Durán5–7, 2–6
Loss0–2Aug 2022Prague, Czech RepublicChallengerClayBulgaria Adrian AndreevRomania Victor Vlad Cornea Czech Republic Andrew Paulson3–6, 1–6
Win1–2May 2023Coquimbo, ChileChallengerClayArgentina Valerio AboianArgentina Tomás Farjat Italy Facundo Juárez7–6(7–4), 6–0
Loss1–3Sep 2023Antofagasta, ChileChallengerClayItaly Luciano DarderiBolivia Boris Arias Bolivia Federico Zeballos7–5, 4–6, [8–10]
Win2–3Jan 2024Punta del Este, UruguayChallengerClayArgentina Federico Agustín GómezArgentina Guido Andreozzi Argentina Guillermo Durán6–3, 6–2
Loss2–4Mar 2024Santa Cruz de la Sierra, BoliviaChallengerClayBolivia Hugo DellienArgentina Andrea Collarini Argentina Renzo Olivo7–5, 4–6, [8–10]
Win3–4Sep 2024Buenos Aires, ArgentinaChallengerClayArgentina Facundo MenaBrazil Felipe Meligeni Alves Brazil Marcelo Zormann1–6, 6–2, [12–10]
Loss3–5Aug 2025Cordenons, ItalyChallengerClayBolivia Boris AriasCzech Republic Andrew Paulson Czech Republic Michael Vrbenský4–6, 2–6
Loss3–6Aug 2026Sion, SwitzerlandChallengerClayArgentina Facundo MenaAustria Maximilian Neuchrist Czech Republic David Poljak4–6, 4–6

ITF Futures/World Tennis Tour finals

Singles: 10 (6 titles, 4 runner-ups)

Legend
Legend ITF WTT (6–4)
ITF WTT (6–4)
ResultW–LDateTournamentTierSurfaceOpponentScore
Loss0–1Feb 2022M15 Naples, USAWTTClayBrazil Pedro Boscardin Dias3–6, 6–7(5–7)
Win1–1May 2022M15 Quito, EcuadorWTTClayPeru Arklon Huertas del Pino7–6(7–1), 6–3
Win2–1Jun 2022M15 Quito, EcuadorWTTClayArgentina Juan Bautista Otegui6–3, 6–2
Loss2–2Sep 2022M25 Maribor, SloveniaWTTClayArgentina Hernán Casanova4–6, 3–6
Win3–2Oct 2022M15 Santa Cruz de la Sierra, BoliviaWTTClayPeru Conner Huertas del Pino6–0, 6–2
Win4–2Nov 2022M15 Santa Cruz de la Sierra, BoliviaWTTClayUruguay Franco Roncadelli7–6(7–5), 6–3
Loss4–3Mar 2023M25 Río Cuarto, ArgentinaWTTClaySpain Pol Martín Tiffon6–7(7–9), 6–3, 5–7
Win5–3Feb 2024M25 Punta del Este, UruguayWTTClayPeru Gonzalo Bueno6–4, 3–6, 7–5
Win6–3Feb 2024M25 Punta del Este, UruguayWTTClayEcuador Álvaro Guillén Meza6–1, 6–0
Loss6–4Oct 2025M25 Rio de Janeiro, BrazilWTTClayBrazil Eduardo Ribeiro7–5, 2–6, 1–6

Doubles: 18 (12 titles, 6 runner-ups)

Legend
Legend ITF Futures/WTT (12–6)Finals by surface Hard (1–0) Clay (11–6) Grass (0–0) Carpet (0–0)
ITF Futures/WTT (12–6)
Finals by surface
Hard (1–0)
Clay (11–6)
Grass (0–0)
Carpet (0–0)
ResultW–LDateTournamentTierSurfacePartnerOpponentsScore
Loss0–1Sep 2012Bolivia F2, BoliviaFuturesClayBolivia Hugo DellienArgentina Facundo Mena Colombia Sebastián Serrano3–6, 5–7
Loss0–2Sep 2013Bolivia F3, BoliviaFuturesClayBolivia Hugo DellienArgentina Franco Feitt Argentina José María Páez3–6, 3–6
Win1–2Jun 2021M25 Wichita, USAWTTHardChile Nicolás AcevedoUnited States John McNally Canada Benjamin Sigouin6–4, 2–6, [12–10]
Win2–2Sep 2021M15 Ibagué, ColombiaWTTClayBolivia Boris AriasColombia Alejandro Gómez Colombia Alejandro Hoyos6–4, 3–6, [10–4]
Win3–2Oct 2021M25 Lima, PeruWTTClayPeru Jorge PantaEcuador Cayetano March Spain Pol Martín Tiffon7–6(7–4), 7–6(7–3)
Loss3–3Nov 2021M15 Córdoba, ArgentinaWTTClayBolivia Boris AriasUruguay Ignacio Carou Argentina Alejo Lorenzo Lingua Lavallén4–6, 7–5, [4–10]
Win4–3Apr 2022M25 Rosario, ArgentinaWTTClayPeru Arklon Huertas del PinoArgentina Tomás Farjat Argentina Ignacio Monzón6–3, 6–3
Win5–3Apr 2022M25 Rosario, ArgentinaWTTClayPeru Arklon Huertas del PinoArgentina Román Andrés Burruchaga Argentina Juan Ignacio Galarza6–3, 7–5
Loss5–4May 2022M15 Quito, EcuadorWTTClayPeru Arklon Huertas del PinoBrazil Igor Gimenez Brazil Nicolas Zanellato2–6, 6–7(5–7)
Win6–4Jun 2022M15 Quito, EcuadorWTTClayPeru Arklon Huertas del PinoBolivia Alejandro Mendoza Peru Jorge Panta6–3, 7–5
Win7–4Aug 2022M25 Koksijde, BelgiumWTTClayArgentina Hernán CasanovaCroatia Zvonimir Babić Sweden Simon Freund6–1, 4–6, [10–5]
Win8–4Mar 2023M25 San Miguel de Tucumán, ArgentinaWTTClayArgentina Valerio AboianArgentina Franco Emanuel Egea Argentina Gabriel Alejandro Hidalgo6–7(5–7), 7–5, [10–7]
Loss8–5Jun 2023M25 Jablonec nad Nisou, Czech RepublicWTTClayBrazil Pedro SakamotoGermany Sebastian Fanselow Czech Republic Dominik Kellovský2–6, 4–6
Win9–5Jun 2023M25 Córdoba, SpainWTTClayArgentina Valerio AboianSpain Imanol López Morillo Spain Benjamín Winter López6–3, 6–7(4–7), [11–9]
Loss9–6Jul 2023M25 Kassel, GermanyWTTClaySerbia Stefan LatinovićCzech Republic Jiří Barnat Czech Republic Patrik Rikl4–6, 4–6
Win10–6Oct 2025M25 Rio de Janeiro, BrazilWTTClayUruguay Ignacio CarouBrazil Christian Oliveira Brazil Paulo André Saraiva dos SantosWalkover
Win11–6Jul 2026M15 Villa Constitución, ArgentinaWTTClayArgentina Lorenzo Joaquín RodríguezArgentina Segundo Goity Zapico Argentina Tadeo Meneo7–6(7–1), 6–2
Win12–6Jul 2026M25 Wetzlar, GermanyWTTClayArgentina Tomás FarjatGermany Edison Ambarzumjan India Madhwin Kamath6–2, 6–4

External links