| UTR Pro Atlanta | 04/15 19:00 | - | Eli Stephenson v Santiago Villarruel | 6-1,6-3 | |
| UTR Pro Atlanta | 04/15 01:00 | - | Santiago Villarruel v Dhakshineswar Suresh | 2-6,1-6 | |
| UTR Pro Atlanta | 04/12 18:00 | - | Santiago Villarruel v Lautaro Pane | 3-6,6-7 | |
| UTR Pro Atlanta | 04/11 22:15 | - | Santiago Villarruel v Edward Winter | 0-6,3-6 | |
| UTR Pro Atlanta | 04/10 23:31 | - | Samuel Reeve v Santiago Villarruel | 2-6,2-5 | |
| ITF Bolivia F3 | 10/03 23:25 | 25 | Santiago Villarruel v Nicolas Alberto Arreche | 7-5,2-6,4-6 | |
| ITF Bolivia F3 Qual | 10/02 20:00 | 62 | Santiago Villarruel v Eduardo Ribeiro | 7-6,4-6,6-2 | |
| ITF Bolivia F3 Qual | 10/01 18:35 | 62 | Santiago Villarruel v Nicolas Bianchi | 6-0,7-5 | |
| ITF Bolivia F3 Qual | 09/30 13:30 | 62 | Santiago Villarruel v Nicolas Bruna | 6-2,3-6,6-4 | |
| ITF Bolivia F2 Qual | 09/23 13:30 | 62 | Santiago Villarruel v Luis Valero | 1-6,5-7 | |
| ITF Bolivia F1 | 09/18 17:40 | 25 | Santiago Villarruel v Nicolas Alberto Arreche | 6-3,2-6,3-6 | |
| ITF Tunisia F19 | 05/15 11:30 | 44 | Santiago Villarruel v Maxence Broville | 3-6,1-6 | |
| ITF Tunisia F19 | 05/14 09:00 | 44 | Santiago Villarruel v Anas Fattar | 1-6,6-3,6-3 | |
| ITF Tunisia F18 | 05/11 13:20 | 26 | Michael Linzer v Santiago Villarruel | 6-2,6-3 | |
| ITF Tunisia F18 | 05/09 10:25 | 25 | Santiago Villarruel v James Allemby | 2-6,6-1,6-2 | |
| ITF Tunisia F18 | 05/08 09:00 | 62 | Santiago Villarruel v Felipe Derdoy | 7-5,6-2 | |
| ITF Tunisia F18 | 05/07 11:00 | 62 | Santiago Villarruel v Fabio Mercuri | 3-6,6-4,6-4 | |
| ITF Tunisia F8 | 02/26 10:00 | 62 | Miguel Semmler v Santiago Villarruel | 6-1,6-1 | |
| ITF Tunisia F8 | 02/25 08:00 | 62 | Santiago Villarruel v Fabio Mercuri | 7-6,6-2 | |
| ITF Tunisia F7 | 02/20 08:30 | 62 | Cristian Carli v Santiago Villarruel | 6-1,6-3 | |
| ITF Tunisia F7 | 02/19 12:30 | 62 | Santiago Villarruel v Matteo Tinelli | 6-1,6-1 | |
| ITF Tunisia F6 | 02/12 08:00 | 62 | Giuliano Benedetti v Santiago Villarruel | 4-6,6-3,6-2 | |
| ITF Tunisia F6 | 02/11 08:00 | 62 | Danail Banov v Santiago Villarruel | 3-6,0-6 | |
| ITF Tunisia F5 | 02/06 08:00 | 62 | Santiago Villarruel v Jacopo Berrettini | 4-6,2-6 | |
| ITF Tunisia F5 | 02/05 10:00 | 62 | Santiago Villarruel v Giuseppe Tresca | 7-5,6-1 | |
| ITF Tunisia F5 | 02/04 12:00 | 62 | Santiago Villarruel v Anupam Kumar | 6-1,6-1 | |
| ITF Tunisia F33 | 11/23 11:00 | 25 | Sergio Martos Gornes v Santiago Villarruel | 6-1,6-1 | |
| ITF Tunisia F32 | 11/15 08:30 | 25 | Santiago Villarruel v Goncalo Oliveira | 4-6,7-5,6-7 | |
| ITF Tunisia F32 | 11/14 08:30 | 44 | Santiago Villarruel v Roberto Preka | 6-1,6-2 | |
| ITF Tunisia F32 | 11/13 08:30 | 44 | Santiago Villarruel v Johann Soares Valinho | 6-1,6-1 |