| Challenger - Santa Cruz | 01/25 18:20 | 25 | [127] Francisco Cerundolo v Diaz Acosta, Facundo [294] | 7-6,2-6,6-3 | |
| Challenger Blumenau | 01/14 17:35 | 27 | [303] Diaz Acosta, Facundo v Juan Bautista Torres [473] | 4-6,4-6 | |
| Challenger Blumenau | 01/13 13:00 | 26 | [303] Diaz Acosta, Facundo v Pedro Sakamoto [368] | 6-4,6-3 | |
| Challenger Blumenau | 01/12 13:00 | 25 | Facundo Diaz Acosta v Quentin Folliot | 6-3,6-0 | |
| Challenger - Buenos Aires | 01/09 13:00 | 29 | [338] Diaz Acosta, Facundo v Rodriguez Taverna, Santiago FA [302] | 4-6,2-6 | |
| Challenger - Buenos Aires | 01/08 13:00 | 28 | Murkel Dellien v Diaz Acosta, Facundo | 3-6,1-6 | |
| Challenger - Buenos Aires | 01/07 14:30 | 27 | [436] Gonzalo Villanueva v Diaz Acosta, Facundo [338] | 3-6,2-6 | |
| Challenger - Buenos Aires | 01/06 15:40 | 26 | Mariano Navone v Diaz Acosta, Facundo | 3-6,2-6 | |
| Challenger - Buenos Aires | 01/04 13:00 | 25 | Lautaro Midon v Diaz Acosta, Facundo | 5-7,3-6 | |
| Challenger Rio De Janeiro | 12/13 17:20 | 25 | [337] Diaz Acosta, Facundo v Nicolas Alvarez Varona [371] | 3-6,6-4,3-6 | |
| Challenger - Florianopolis | 12/08 17:50 | 26 | [396] Facundo Juarez v Diaz Acosta, Facundo [336] | 3-6,7-5,6-2 | |
| Challenger - Florianopolis | 12/06 16:35 | 25 | [336] Diaz Acosta, Facundo v Kaichi Uchida [316] | 6-4,6-3 | |
| Challenger Sao Paulo | 12/03 13:00 | 27 | [349] Diaz Acosta, Facundo v Luciano Darderi [443] | 3-6,4-6 | |
| Challenger Sao Paulo | 12/02 17:00 | 26 | [131] Thiago Seyboth Wild v Diaz Acosta, Facundo [349] | 3-6,5-7 | |
| Challenger Sao Paulo | 11/30 16:55 | 25 | [349] Diaz Acosta, Facundo v Gonzalo Villanueva [460] | 7-5,6-1 | |
| Challenger Brasilia | 11/23 20:50 | 25 | [132] Thiago Seyboth Wild v Diaz Acosta, Facundo [347] | 7-6,6-3 | |
| Challenger Campinas | 11/14 16:00 | 26 | [344] Diaz Acosta, Facundo v Joao Lucas Reis da Silva [490] | 4-6,6-7 | |
| Challenger Guayaquil | 11/02 15:00 | 25 | [464] Facundo Juarez v Diaz Acosta, Facundo [345] | 3-6,6-4,6-4 | |
| Challenger - Buenos Aires | 10/18 17:35 | 25 | [128] Hugo Dellien v Diaz Acosta, Facundo [338] | 4-6,6-0,6-1 | |
| Challenger - Santiago | 10/12 16:00 | 25 | [360] Diaz Acosta, Facundo v Francisco Cerundolo [110] | 4-6,0-6 | |
| Challenger - Santiago | 10/07 18:00 | 26 | [217] Nicolas Jarry v Diaz Acosta, Facundo [360] | 6-7,7-5,6-4 | |
| Challenger - Santiago | 10/05 20:30 | 25 | [360] Diaz Acosta, Facundo v Marcelo Tomas Barrios Vera [154] | 6-3,5-7,6-1 | |
| Challenger - Santiago | 10/04 15:00 | - | [360] Diaz Acosta, Facundo v Rodriguez, Cristian [421] | 6-2,6-2 | |
| Challenger - Santiago | 10/03 17:25 | 26 | [359] Diaz Acosta, Facundo v Hidalgo, Diego [495] | 6-3,7-6 | |
| ITF M25 Madrid | 09/15 10:20 | 25 | [385] Diaz Acosta, Facundo v Nikolas S Izquierdo [347] | 3-6,3-6 | |
| ITF M25 Eupen | 09/12 13:00 | 29 | Matteo Arnaldi v Diaz Acosta, Facundo | 6-7,2-6 | |
| ITF M25 Eupen | 09/11 13:35 | 28 | Pauwels, Maxime v Diaz Acosta, Facundo | 4-6,4-6 | |
| ITF M25 Eupen | 09/10 10:55 | 27 | Sinclair, Colin v Diaz Acosta, Facundo | 4-6,5-7 | |
| ITF M25 Eupen | 09/09 07:30 | 26 | Tristan Schoolkate v Diaz Acosta, Facundo | 1-6,7-6,2-6 | |
| ITF M25 Eupen | 09/07 11:00 | 25 | Dhoe, Benjamin v Diaz Acosta, Facundo | 0-6,2-6 |