| Challenger Santiago | 03/09 17:00 | 28 | [232] Thomaz Bellucci v Hugo Dellien [87] | 4-6,0-6 | |
| Challenger Santiago | 03/08 15:00 | 27 | [196] Kimmer Coppejans v Hugo Dellien [87] | 4-6,2-6 | |
| Challenger Santiago | 03/07 14:00 | 26 | [228] Gian Marco Moroni v Hugo Dellien [87] | 6-7,2-6 | |
| Challenger Santiago | 03/06 16:15 | 25 | [378] Joao Menezes v Hugo Dellien [87] | 6-4,4-6,4-6 | |
| ATP Sao Paulo | 03/01 17:40 | 27 | [108] Casper Ruud v Hugo Dellien [95] | 6-1,6-1 | |
| ATP Sao Paulo | 02/28 15:30 | 26 | [95] Hugo Dellien v Juan Ignacio Londero [66] | 6-4,7-6 | |
| ATP Sao Paulo | 02/26 16:25 | 25 | [170] Pedro Martinez v Hugo Dellien [95] | 1-6,2-6 | |
| ATP Rio De Janeiro | 02/22 18:00 | 27 | [83] Aljaz Bedene v Hugo Dellien [113] | 4-6,6-2,6-3 | |
| ATP Rio De Janeiro | 02/20 20:40 | 26 | [113] Hugo Dellien v Roberto Carballes Baena [114] | 7-5,6-4 | |
| ATP Rio De Janeiro | 02/19 17:15 | 25 | [76] Guido Andreozzi v Hugo Dellien [113] | 4-6,4-6 | |
| ATP Rio De Janeiro | 02/17 19:00 | 164 | [113] Hugo Dellien v Carlos Berlocq [135] | 6-3,7-6 | |
| ATP Rio De Janeiro | 02/16 19:55 | 64 | Hugo Dellien v Rafael Matos | 6-4,1-6,6-0 | |
| ATP Buenos Aires | 02/10 18:45 | 164 | [149] Facundo Bagnis v Hugo Dellien [116] | 7-6,6-2 | |
| ATP Buenos Aires | 02/09 21:05 | 64 | Juan Bautista Otegui v Hugo Dellien | 2-6,2-6 | |
| ATP Cordoba | 02/06 00:00 | 25 | [116] Hugo Dellien v Albert Ramos-Vinolas [71] | 6-7,6-4,3-6 | |
| ATP Cordoba | 02/03 18:30 | 164 | [119] Hugo Dellien v Andrej Martin [181] | 6-7,7-6,5-7 | |
| ATP Cordoba | 02/02 20:00 | 64 | Hugo Dellien v Francisco Cerundolo | 6-4,6-3 | |
| Challenger Punta del Este | 01/25 22:20 | 27 | [152] Facundo Bagnis v Hugo Dellien [123] | 7-5,4-6,6-1 | |
| Challenger Punta del Este | 01/24 16:00 | 26 | Juan Pablo Ficovich v Hugo Dellien | 3-6,3-6 | |
| Challenger Punta del Este | 01/22 14:00 | 25 | [312] Renzo Olivo v Hugo Dellien [123] | 3-6,6-3,5-7 | |
| Challenger Buenos Aires | 11/15 19:00 | 26 | [219] Facundo Arguello v Hugo Dellien [119] | 6-4,6-4 | |
| Challenger Buenos Aires | 11/13 19:50 | 25 | [379] Gonzalo Villanueva v Hugo Dellien [119] | 4-6,3-6 | |
| Challenger Montevideo | 11/07 17:00 | 26 | [117] Hugo Dellien v Daniel G-Traver [184] | 5-7,5-7 | |
| Challenger Montevideo | 11/05 19:30 | 25 | Hugo Dellien v Francisco Llanes | 6-2,6-3 | |
| Challenger Guayaquil | 10/31 18:05 | 26 | [124] Pedro Sousa v Hugo Dellien [115] | 4-6,6-1,6-4 | |
| Challenger Guayaquil | 10/30 23:50 | 25 | [443] Thiago Seyboth Wild v Hugo Dellien [115] | 6-3,3-6,4-6 | |
| Challenger Lima | 10/25 23:00 | 27 | [116] Hugo Dellien v Christian Garin [102] | 6-2,4-6,4-6 | |
| Challenger Lima | 10/24 18:10 | 26 | Hugo Dellien v Andrea Collarini | 0-6,7-6,6-3 | |
| Challenger Lima | 10/22 16:40 | 25 | [116] Hugo Dellien v Miljan Zekic [264] | 6-4,7-5 | |
| Challenger Santo Domingo | 10/10 05:20 | 25 | [495] Jürgen Melzer v Hugo Dellien [109] | 7-5,6-3 |
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.