# Murkel Dellien

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. He is the current No. 2 Bolivian tennis player. He also has a career-high ATP doubles ranking of No. 174 achieved on 1 April 2024. 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: 2 (1 title, 1 runner-up)

* Legend
* ATP Challenger Tour (1–1)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| Loss | 0–1 | Jan 2023 | Tigre, Argentina | Challenger | Clay | Juan Manuel Cerúndolo | 6–4, 4–6, 2–6 |
| Win | 1–1 | Jul 2024 | Brașov, Romania | Challenger | Clay | Dmitry Popko | 6–3, 7–5 |

### Doubles: 5 (3 titles, 2 runner-ups)

* Legend
* ATP Challenger Tour (3–2)
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
| Loss | 0–1 | Jun 2022 | Corrientes, Argentina | Challenger | Clay | Nicolás Álvarez | Guido Andreozzi Guillermo Durán | 5–7, 2–6 |
| Loss | 0–2 | Aug 2022 | Prague, Czech Republic | Challenger | Clay | Adrian Andreev | Victor Vlad Cornea Andrew Paulson | 3–6, 1–6 |
| Win | 1–2 | May 2023 | Coquimbo, Chile | Challenger | Clay | Valerio Aboian | Tomás Farjat Facundo Juárez | 7–6$^{(7–4)}$, 6–0 |
| Win | 2–2 | Jan 2024 | Punta del Este, Uruguay | Challenger | Clay | Federico Agustín Gómez | Guido Andreozzi Guillermo Durán | 6–3, 6–2 |
| Win | 3–2 | Sep 2024 | Buenos Aires, Argentina | Challenger | Clay | Facundo Mena | Felipe Meligeni Alves Marcelo Zormann | 1–6, 6–2, [12–10] |

## ITF Futures/World Tennis Tour finals
### Singles: 9 (6 titles, 3 runner-ups)

* Legend
* ITF WTT (6–3)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| Loss | 0–1 | Feb 2022 | M15 Naples, USA | WTT | Clay | Pedro Boscardin Dias | 3–6, 6–7$^{(5–7)}$ |
| Win | 1–1 | May 2022 | M15 Quito, Ecuador | WTT | Clay | Arklon Huertas del Pino | 7–6$^{(7–1)}$, 6–3 |
| Win | 2–1 | Jun 2022 | M15 Quito, Ecuador | WTT | Clay | Juan Bautista Otegui | 6–3, 6–2 |
| Loss | 2–2 | Sep 2022 | M25 Maribor, Slovenia | WTT | Clay | Hernán Casanova | 4–6, 3–6 |
| Win | 3–2 | Oct 2022 | M15 Santa Cruz de la Sierra, Bolivia | WTT | Clay | Conner Huertas del Pino | 6–0, 6–2 |
| Win | 4–2 | Nov 2022 | M15 Santa Cruz de la Sierra, Bolivia | WTT | Clay | Franco Roncadelli | 7–6$^{(7–5)}$, 6–3 |
| Loss | 4–3 | Mar 2023 | M25 Río Cuarto, Argentina | WTT | Clay | Pol Martín Tiffon | 6–7$^{(7–9)}$, 6–3, 5–7 |
| Win | 5–3 | Feb 2024 | M25 Punta del Este, Uruguay | WTT | Clay | Gonzalo Bueno | 6–4, 3–6, 7–5 |
| Win | 6–3 | Feb 2024 | M25 Punta del Este, Uruguay | WTT | Clay | Álvaro Guillén Meza | 6–1, 6–0 |

### Doubles: 15 (9 titles, 6 runner-ups)

* Legend
* ITF Futures/WTT (9–6)
* Finals by surface
* Hard (1–0)
* Clay (8–6)
* Grass (0–0)
* Carpet (0–0)
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
| Loss | 0–1 | Sep 2012 | Bolivia F2, Bolivia | Futures | Clay | Hugo Dellien | Facundo Mena Sebastián Serrano | 3–6, 5–7 |
| Loss | 0–2 | Sep 2013 | Bolivia F3, Bolivia | Futures | Clay | Hugo Dellien | Franco Feitt José María Páez | 3–6, 3–6 |
| Win | 1–2 | Jun 2021 | M25 Wichita, USA | WTT | Hard | Nicolás Acevedo | John McNally Benjamin Sigouin | 6–4, 2–6, [12–10] |
| Win | 2–2 | Sep 2021 | M15 Ibagué, Colombia | WTT | Clay | Boris Arias | Alejandro Gómez Alejandro Hoyos | 6–4, 3–6, [10–4] |
| Win | 3–2 | Oct 2021 | M25 Lima, Peru | WTT | Clay | Jorge Panta | Cayetano March Pol Martín Tiffon | 7–6$^{(7–4)}$, 7–6$^{(7–3)}$ |
| Loss | 3–3 | Nov 2021 | M15 Córdoba, Argentina | WTT | Clay | Boris Arias | Ignacio Carou Alejo Lorenzo Lingua Lavallén | 4–6, 7–5, [4–10] |
| Win | 4–3 | Apr 2022 | M25 Rosario, Argentina | WTT | Clay | Arklon Huertas del Pino | Tomás Farjat Ignacio Monzón | 6–3, 6–3 |
| Win | 5–3 | Apr 2022 | M25 Rosario, Argentina | WTT | Clay | Arklon Huertas del Pino | Román Andrés Burruchaga Juan Ignacio Galarza | 6–3, 7–5 |
| Loss | 5–4 | May 2022 | M15 Quito, Ecuador | WTT | Clay | Arklon Huertas del Pino | Igor Gimenez Nicolas Zanellato | 2–6, 6–7$^{(5–7)}$ |
| Win | 6–4 | Jun 2022 | M15 Quito, Ecuador | WTT | Clay | Arklon Huertas del Pino | Alejandro Mendoza Jorge Panta | 6–3, 7–5 |
| Win | 7–4 | Aug 2022 | M25 Koksijde, Belgium | WTT | Clay | Hernán Casanova | Zvonimir Babić Simon Freund | 6–1, 4–6, [10–5] |
| Win | 8–4 | Mar 2023 | M25 San Miguel de Tucumán, Argentina | WTT | Clay | Valerio Aboian | Franco Emanuel Egea Gabriel Alejandro Hidalgo | 6–7$^{(5–7)}$, 7–5, [10–7] |
| Loss | 8–5 | Jun 2023 | M25 Jablonec nad Nisou, Czech Republic | WTT | Clay | Pedro Sakamoto | Sebastian Fanselow Dominik Kellovský | 2–6, 4–6 |
| Win | 9–5 | Jun 2023 | M25 Córdoba, Spain | WTT | Clay | Valerio Aboian | Imanol López Morillo Benjamin Winter López | 6–3, 6–7$^{(4–7)}$, [11–9] |
| Loss | 9–6 | Jul 2023 | M25 Kassel, Germany | WTT | Clay | Stefan Latinovic | Jiří Barnat Patrik Rikl | 4–6, 4–6 |