| Wimbledon | 07/05 16:30 | 23 | [65] Marcos Giron v Hugo Dellien [171] | 7-6,6-4,6-4 | |
| Challenger Heilbronn | 06/05 16:00 | 25 | [160] Hugo Dellien v Jaume Munar [81] | 1-6,1-6 | |
| French Open | 05/30 09:00 | 23 | [35] Nicolas Jarry v Hugo Dellien [160] | 6-4,6-4,6-2 | |
| ATP Geneva | 05/23 13:20 | 25 | [160] Hugo Dellien v J.J. Wolf [49] | 4-6,2-6 | |
| Challenger Oeiras | 05/17 14:35 | 26 | [68] Pedro Cachin v Hugo Dellien [157] | 6-4,6-2 | |
| Challenger Oeiras | 05/15 13:55 | 25 | [157] Hugo Dellien v Ivan Gakhov [167] | 6-1,6-3 | |
| ATP Rome | 05/11 09:00 | 23 | [157] Hugo Dellien v Roberto Carballes Baena [51] | 2-6,3-6 | |
| Challenger Sarasota | 04/11 18:35 | 25 | Aleksandar Vukic v Hugo Dellien | Cancelled | |
| ATP Houston | 04/04 18:30 | 25 | [112] Hugo Dellien v Cristian Garin [74] | 3-6,0-6 | |
| Challenger Vina del Mar | 03/14 13:00 | 25 | Hugo Dellien v Daniel Antonio Nunez | Cancelled | |
| Challenger Santiago | 03/12 19:00 | 29 | [400] Thiago Seyboth Wild v Hugo Dellien [99] | 6-3,3-6,3-6 | |
| Challenger Santiago | 03/11 16:20 | 28 | [99] Hugo Dellien v Genaro Alberto Olivieri [231] | 6-2,6-2 | |
| Challenger Santiago | 03/10 20:10 | 27 | [166] Franco Agamenone v Hugo Dellien [99] | 7-6,6-7,6-7 | |
| Challenger Santiago | 03/08 14:00 | 26 | [216] Andrea Vavassori v Hugo Dellien [99] | 5-7,6-4,6-7 | |
| Challenger Santiago | 03/07 13:00 | 25 | [189] Andrea Pellegrino v Hugo Dellien [99] | 3-6,6-4,2-6 | |
| ATP Rio De Janeiro | 02/24 19:30 | 27 | [111] Hugo Dellien v Cameron Norrie [13] | 6-4,1-6,4-6 | |
| ATP Rio De Janeiro | 02/22 21:40 | 26 | [54] Alex Molcan v Hugo Dellien [111] | 6-1,2-6,2-6 | |
| ATP Rio De Janeiro | 02/20 19:30 | 25 | [143] Joao Sousa v Hugo Dellien [111] | 0-6,2-6 | |
| ATP Buenos Aires | 02/14 16:30 | 25 | [82] Tomas Martin Etcheverry v Hugo Dellien [107] | 3-6,6-2,6-2 | |
| ATP Cordoba | 02/11 18:20 | 28 | [138] Hugo Dellien v Sebastian Baez [47] | 4-6,4-6 | |
| ATP Cordoba | 02/10 22:05 | 27 | [114] Juan Manuel Cerundolo v Hugo Dellien [138] | 7-6,4-6,0-6 | |
| ATP Cordoba | 02/09 18:40 | 26 | Guido Pella v Hugo Dellien | 3-6,4-6 | |
| ATP Cordoba | 02/08 22:50 | 25 | [138] Hugo Dellien v Pedro Cachin [66] | 6-3,6-4 | |
| ATP Cordoba | 02/05 15:00 | 19 | [139] Hugo Dellien v Nicolas Kicker [201] | 4-6,6-1,6-2 | |
| ATP Cordoba | 02/04 14:30 | 14 | [139] Hugo Dellien v Thiago Seyboth Wild [348] | 6-4,4-6,7-5 | |
| Challenger Concepcion | 01/28 14:00 | 28 | [76] Federico Coria v Hugo Dellien [131] | 6-1,6-2 | |
| Challenger Concepcion | 01/27 16:00 | 27 | [126] Juan Manuel Cerundolo v Hugo Dellien [131] | 3-6,3-6 | |
| Challenger Concepcion | 01/26 16:55 | 26 | [201] Nicolas Kicker v Hugo Dellien [131] | 6-4,4-6,0-6 | |
| Challenger Concepcion | 01/25 13:00 | 25 | [196] Mikhail Kukushkin v Hugo Dellien [131] | 2-6,2-6 | |
| Australian Open | 01/18 09:00 | 23 | [191] Enzo Couacaud v Hugo Dellien [131] | 6-4,7-5,6-0 |
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.