| Paraguay Open | 2019/09/10 16:25 | Gaston Alto v Daniel Santos | W | 3-1 |
| Pan American Games | 2019/08/10 18:30 | Jorge Campos v Gaston Alto | W | 2-3 |
| Pan American Games | 2019/08/10 01:10 | Gaston Alto v Brian Afanador | W | 3-0 |
| Pan American Games | 2019/08/06 17:30 | Kanak Jha v Gaston Alto | L | 4-1 |
| Pan American Games | 2019/08/05 21:45 | Bryan Blas v Gaston Alto | W | 0-4 |
| Challenger Ochsenhausen | 2019/05/21 10:20 | Josip Huzjak v Gaston Alto | L | 3-0 |
| Challenger Ochsenhausen | 2019/05/21 08:20 | Gaston Alto v Sven Happek | W | 3-0 |
| Challenger Ochsenhausen | 2019/05/20 20:00 | Tomas Konecny v Gaston Alto | W | 1-3 |
| Paraguay Open U21 Women | 2019/09/10 20:55 | Diego Hermosilla v Martin Bentancor | L | 0-3 |
| Paraguay Open | 2019/09/10 16:25 | Kai Zhang v Diego Hermosilla | L | 3-0 |
| Paraguay Open U21 Women | 2019/09/10 14:35 | Nicolas Burgos v Diego Hermosilla | L | 2-0 |