| WTT Contender Lasko | 2021/11/02 09:10 | Gaston Alto v Irvin Bertrand | W | 3-2 |
| WTT Contender Tunis | 2021/10/24 15:45 | Tomas Polansky v Gaston Alto | L | 3-2 |
| Olümpiamängud 2020 - mehed 2020 | 2021/07/24 11:15 | Alvaro Robles v Gaston Alto | L | 4-1 |
| Latin American Olympic Quals | 2021/04/14 15:15 | Jorge Campos v Gaston Alto | L | 4-1 |
| Latin American Olympic Quals | 2021/04/13 19:00 | Emil Santos v Gaston Alto | W | 1-4 |
| WTT Star Contender Doha | 2021/03/06 15:00 | Gaston Alto v Martin Allegro | L | 0-3 |
| Challenger Ochsenhausen | 2020/11/17 14:15 | Florian Bluhm v Gaston Alto | L | 3-0 |
| Challenger Ochsenhausen | 2020/11/17 12:40 | Gaston Alto v Florian Bluhm | L | 2-3 |
| WTT Contender Lasko | 2021/11/02 09:10 | Lilian Bardet v Hiroto Shinozuka | W | 0-3 |
| Jaapani T League | 2021/10/24 08:40 | Yuya Oshima v Hiroto Shinozuka | W | 0-3 |
| Asian Championship | 2021/10/01 09:30 | Hiroto Shinozuka v Yi-Hsin Feng | L | 1-3 |
| Asian Championship | 2021/09/30 10:40 | Hiroto Shinozuka v Aidos Kenzhigulov | W | 3-0 |
| WTT Star Contender Doha | 2021/09/21 08:30 | Hiroto Shinozuka v Siu Hang Lam | L | 2-3 |
| WTT Star Contender Doha | 2021/09/20 13:00 | Hiroto Shinozuka v Sadi Ismailov | W | 3-1 |
| Jaapani T League | 2020/12/23 06:30 | Shunsuke Togami v Hiroto Shinozuka | L | 3-0 |
| Jaapani T League | 2020/12/10 04:30 | Hiroto Shinozuka v Koki Niwa | L | 1-3 |