Ground: Hardcourt indoor
| Challenger San Luis Potosi | 2025/04/13 18:50 | Felix Corwin v Guillermo Tunas | 6-2,6-4 |
| Challenger San Luis Potosi | 2025/04/13 18:50 | Felix Corwin v Guillermo Tunas | 6-2,6-4 |
| Challenger Mexico City | 2025/04/06 21:30 | Pedro Sakamoto v Guillermo Tunas | 6-1,6-2 |
| Challenger Morelia | 2025/03/23 18:15 | Viktor Durasovic v Guillermo Tunas | 6-1,6-1 |
| Challenger Merida | 2025/03/16 17:00 | Evan Zhu v Guillermo Tunas | 6-2,6-1 |
| ITF M15 Huamantla | 2025/03/11 17:30 | Guillermo Tunas v Alberto Odiseo Alvarado Berrospi | 2-6,3-6 |
| ITF M15 Guatemala | 2024/11/11 16:00 | Enzo Crevelaro v Guillermo Tunas | 6-3,6-4 |
| ITF M15 Guatemala | 2024/11/04 17:20 | Alexander Brown v Guillermo Tunas | 6-4,6-1 |
| Challenger San Luis Potosi | 2025/04/14 18:00 | Felix Corwin v Rafael De Alba | 6-3,4-6,2-6 |
| Challenger San Luis Potosi | 2025/04/13 18:50 | Felix Corwin v Guillermo Tunas | 6-2,6-4 |
| ATP Houston | 2025/03/29 21:05 | Felix Corwin v Patrick Zahraj | 4-6,5-7 |
| Challenger Concepcion | 2025/03/23 14:30 | Felix Corwin v Nicolas Kicker | 6-3,1-6,1-6 |
| Challenger Asuncion | 2025/03/19 21:30 | Felix Corwin v Tomas Barrios Vera | 1-6,6-7 |
| Challenger Asuncion | 2025/03/18 16:30 | Felix Corwin v Martin A Vergara Del Puerto | 6-2,6-7,6-2 |
| Challenger Asuncion | 2025/03/16 20:20 | Felix Corwin v Victor Lilov | 6-1,7-6 |
| ITF M25 Asuncion | 2025/03/14 14:00 | Felix Corwin v Nicolas Kicker | 1-6,2-6 |