| Challenger Guayaquil | 11/03 22:00 | 29 | [76] Hugo Dellien v Thiago Seyboth Wild [311] | 4-6,0-6 | |
| Challenger Guayaquil | 11/02 22:30 | 28 | [76] Hugo Dellien v Federico Coria [121] | 6-3,6-7,7-6 | |
| Challenger Guayaquil | 11/01 20:00 | 27 | [76] Hugo Dellien v Facundo Bagnis [138] | 7-5,6-2 | |
| Challenger Guayaquil | 10/31 18:10 | 26 | [76] Hugo Dellien v Daniel Elahi Galan [199] | 6-2,5-7,7-5 | |
| Challenger Guayaquil | 10/30 21:00 | 25 | [76] Hugo Dellien v Pedja Krstin [231] | 6-3,6-2 | |
| ATP Basel | 10/21 18:15 | 25 | [28] Alex De Minaur v Hugo Dellien [78] | 6-1,7-5 | |
| ATP Basel | 10/20 13:55 | 164 | [74] Yoshihito Nishioka v Hugo Dellien [79] | 5-7,2-6 | |
| ATP Basel | 10/19 15:40 | 64 | [342] Sandro Ehrat v Hugo Dellien [79] | 6-7,6-2,4-6 | |
| ATP Antwerp | 10/16 11:25 | 25 | [45] Pablo Cuevas v Hugo Dellien [79] | 6-4,6-3 | |
| Challenger Santo Domingo | 10/12 23:00 | 28 | Federico Coria v Hugo Dellien | 6-3,6-1 | |
| Challenger Santo Domingo | 10/11 23:00 | 27 | [151] Alessandro Giannessi v Hugo Dellien [83] | 3-6,1-6 | |
| Challenger Santo Domingo | 10/11 01:00 | 26 | [203] Andrea Collarini v Hugo Dellien [83] | 4-6,4-6 | |
| Challenger Santo Domingo | 10/08 23:00 | 25 | [401] Gonzalo Villanueva v Hugo Dellien [83] | 2-6,3-6 | |
| Challenger Campinas | 10/03 14:30 | 26 | [85] Hugo Dellien v Francisco Cerundolo [262] | 4-6,1-6 | |
| Challenger Campinas | 10/02 19:30 | 25 | [85] Hugo Dellien v Guilherme Clezar [374] | 6-3,6-4 | |
| Challenger Buenos Aires | 09/25 15:05 | 25 | [344] Juan P Varillas v Hugo Dellien [82] | 6-4,6-2 | |
| Davis Cup | 09/14 17:55 | - | [423] Wilfredo Gonzalez v Hugo Dellien [83] | 2-6,5-7 | |
| Davis Cup | 09/13 16:00 | - | Sebastian Dominguez v Hugo Dellien | 1-6,0-6 | |
| US Open | 08/29 17:05 | 24 | [84] Hugo Dellien v Daniil Medvedev [5] | 3-6,5-7,7-5,3-6 | |
| US Open | 08/26 17:45 | 23 | [90] Soonwoo Kwon v Hugo Dellien [84] | Retired | |
| ATP Kitzbuhel | 07/29 10:30 | 25 | [76] Roberto Carballes Baena v Hugo Dellien [89] | 3-6,6-3,6-2 | |
| ATP Kitzbuhel | 07/28 08:00 | 164 | Hugo Dellien v Sandro Kopp | 4-6,6-1,6-2 | |
| ATP Kitzbuhel | 07/27 11:30 | 64 | [87] Hugo Dellien v Pedja Krstin [244] | 6-3,7-5 | |
| ATP Hamburg | 07/23 09:30 | 25 | [87] Hugo Dellien v Nikoloz Basilashvili [16] | 4-6,3-6 | |
| ATP Hamburg | 07/21 11:00 | 164 | [94] Hugo Dellien v Alexey Vatutin [199] | 7-5,7-5 | |
| ATP Hamburg | 07/20 11:00 | 64 | [94] Hugo Dellien v Daniel Masur [253] | 4-6,6-2,7-5 | |
| ATP Bastad | 07/18 15:35 | 26 | [71] Juan Ignacio Londero v Hugo Dellien [94] | 4-6,7-5,6-3 | |
| ATP Bastad | 07/16 12:55 | 25 | [94] Hugo Dellien v Ernests Gulbis [131] | Retired | |
| Challenger Braunschweig | 07/09 08:00 | 25 | [399] Javier Barranco Cosano v Hugo Dellien [83] | 6-1,7-6 | |
| Wimbledon | 07/02 15:45 | 23 | [83] Hugo Dellien v John Millman [64] | 2-6,3-6,4-6 |
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.