| Challenger Guayaquil | 11/03 21:35 | 27 | [115] Hugo Dellien v Daniel E Galan [96] | 1-6,2-6 | |
| Challenger Guayaquil | 11/01 20:00 | 26 | [115] Hugo Dellien v Santiago Rodriguez Taverna [256] | 6-2,4-6,6-3 | |
| Challenger Guayaquil | 10/31 20:00 | 25 | [115] Hugo Dellien v Alex Barrena [412] | 6-2,7-5 | |
| Challenger Guayaquil | 10/31 19:00 | 25 | Hugo Dellien v Nick Hardt | Cancelled | |
| Challenger Curitiba | 10/29 18:00 | 29 | [129] Hugo Dellien v Oliver Crawford [225] | 7-6,4-6,7-6 | |
| Challenger Curitiba | 10/29 13:00 | 28 | [129] Hugo Dellien v Guido Andreozzi [205] | 6-7,6-2,6-3 | |
| Challenger Curitiba | 10/28 13:30 | 27 | [263] Santiago Rodriguez Taverna v Hugo Dellien [129] | 2-6,3-6 | |
| Challenger Curitiba | 10/25 14:00 | 26 | [326] Joao Lucas Reis da Silva v Hugo Dellien [129] | 2-6,3-6 | |
| Challenger Curitiba | 10/23 19:10 | 25 | [332] Eduardo Ribeiro v Hugo Dellien [129] | 4-6,4-6 | |
| Challenger Buenos Aires | 10/12 15:30 | 26 | [137] Hugo Dellien v Jan Choinski [127] | Retired | |
| Challenger Buenos Aires | 10/10 22:20 | 25 | [131] Genaro Alberto Olivieri v Hugo Dellien [137] | 7-5,4-6,6-7 | |
| Challenger Campinas | 10/06 20:45 | 27 | [137] Hugo Dellien v Thiago Monteiro [150] | 7-6,4-6,3-6 | |
| Challenger Campinas | 10/05 13:00 | 26 | [137] Hugo Dellien v Santiago Rodriguez Taverna [251] | 6-2,6-3 | |
| Challenger Campinas | 10/03 14:55 | 25 | [136] Hugo Dellien v Eduardo Ribeiro [337] | 6-1,6-3 | |
| Challenger Bogota | 09/25 18:05 | 25 | [348] Eduardo Riberio v Hugo Dellien [143] | 6-3,2-6,6-3 | |
| Challenger Antofagasta | 09/21 14:30 | 26 | [143] Hugo Dellien v Joao L R Da Silva [304] | 6-3,6-7,5-7 | |
| Challenger Antofagasta | 09/19 13:00 | 25 | Hugo Dellien v Gilbert Klier Junior | 6-2,6-0 | |
| Challenger Santa Cruz | 09/12 00:10 | 25 | [235] Andrea Collarini v Hugo Dellien [141] | 7-6,6-4 | |
| US Open | 08/29 00:20 | 23 | [147] Hugo Dellien v Borna Gojo [105] | 3-6,3-6,1-6 | |
| Challenger Santo Domingo | 08/08 16:20 | 25 | [326] Bernard Tomic v Hugo Dellien [147] | 6-3,6-2 | |
| Challenger Luedenscheid | 08/05 13:00 | 29 | [301] Duje Ajdukovic v Hugo Dellien [165] | 7-5,6-4 | |
| Challenger Luedenscheid | 08/05 08:30 | 28 | [126] Benoit Paire v Hugo Dellien [165] | 7-6,4-6,3-6 | |
| Challenger Luedenscheid | 08/04 13:45 | 27 | [165] Hugo Dellien v Pedro Martinez [133] | 7-5,7-5 | |
| Challenger Luedenscheid | 08/04 09:25 | 26 | [165] Hugo Dellien v Jozef Kovalik [152] | 1-6,6-1,7-6 | |
| Challenger Luedenscheid | 08/02 12:30 | 25 | [165] Hugo Dellien v Daniel Masur [407] | 6-2,6-3 | |
| ATP Hamburg | 07/25 11:30 | 25 | [164] Hugo Dellien v Cristian Garin [120] | 7-6,1-6,3-6 | |
| ATP Bastad | 07/18 13:00 | 25 | [167] Hugo Dellien v Bernabe Zapata Miralles [53] | 3-6,6-7 | |
| ATP Bastad | 07/17 11:30 | 19 | [134] Timofey Skatov v Hugo Dellien [167] | 5-7,6-3,3-6 | |
| ATP Bastad | 07/16 13:45 | 14 | [171] Hugo Dellien v Luca Nardi [154] | 5-7,7-6,6-3 | |
| Challenger Braunschweig | 07/11 09:00 | 25 | [105] Pavel Kotov v Hugo Dellien [171] | 7-6,6-2 |
Wikipedia - Hugo Dellien
Hugo Dellien Velasco (Spanish pronunciation: [ˈuɣo ðeˈljen]; born 16 June 1993) is a Bolivian professional tennis player. He has a career-high ATP singles ranking of No. 64, achieved on 1 August 2022. He is the current No. 1 Bolivian tennis player. He also has a career-high ATP doubles ranking of No. 185 achieved on 2 February 2015. In juniors, Dellien had a career-high combined ranking of No. 2 in March 2011.