Stadium: Cancha 4 Round: 14 Ground: Hardcourt outdoor
| ITF Argentina F8 | 2018/11/05 13:00 | Agustin Velotti v Guido Ivan Justo | 6-3,6-1 |
| ATP Cordoba | 2021/02/20 19:50 | Joao Menezes v Guido Ivan Justo | 6-3,7-6 |
| Challenger Concepcion | 2021/02/14 16:00 | Guido Ivan Justo v Mariano Kestelboim | 3-6,6-4,3-6 |
| ITF M15 Monastir | 2020/10/31 08:30 | Guido Ivan Justo v Skander Mansouri | 6-7,7-5,1-6 |
| ITF M15 Monastir | 2020/10/30 10:00 | Matias Franco Descotte v Guido Ivan Justo | 3-6,4-6 |
| ITF M15 Monastir | 2020/10/29 08:00 | Guido Ivan Justo v Tomas Lipovsek Puches | 6-4,1-6,6-2 |
| ITF M15 Monastir | 2020/10/27 12:40 | Lukas H Lilleengen v Guido Ivan Justo | 0-6,2-6 |
| ITF M15 Monastir | 2020/10/23 10:05 | Wojciech Marek v Guido Ivan Justo | 6-3,6-2 |
| ITF M15 Monastir | 2020/10/22 09:50 | Louis Allen v Guido Ivan Justo | 1-6,1-6 |
| ATP Santiago | 2021/03/08 14:00 | Alejandro Tabilo v Agustin Velotti | 7-6,6-1 |
| ATP Santiago | 2021/03/07 15:45 | Agustin Velotti v Tomas Martin Etcheverry | 7-5,4-6,6-3 |
| ATP Santiago | 2021/03/06 17:30 | Agustin Velotti v Daniel Antonio Nunez | 6-4,6-3 |
| ATP Buenos Aires | 2021/03/01 14:00 | Agustin Velotti v Francisco Cerundolo | 4-6,5-7 |
| ATP Buenos Aires | 2021/02/28 14:00 | Pedro Sakamoto v Agustin Velotti | 3-6,4-6 |
| ATP Buenos Aires | 2021/02/27 15:45 | Agustin Velotti v Guido Andreozzi | 7-5,6-0 |
| ATP Cordoba | 2021/02/21 14:00 | Tomas Barrios Vera v Agustin Velotti | 6-3,6-4 |
| ATP Cordoba | 2021/02/20 15:20 | Agustin Velotti v Mario Vilella Martinez | 6-3,6-4 |