| US Open 2019, MS | 2023/07/12 21:05 | Brian Yang v Jonathan Matias | W | 1-2 |
| Canada Open 2019, MS, Qualification | 2023/07/04 19:35 | Jonathan Matias v Pablo Abian | L | 0-2 |
| Canada Open 2019, MS, Qualification | 2023/07/04 16:50 | Enogat Roy v Jonathan Matias | W | 0-2 |
| Orleans Masters Qual | 2023/04/04 08:55 | Lei, L. X. v Jonathan Matias | L | 2-0 |
| Masters d'Espagne | 2023/03/29 15:15 | Misha Zilberman v Jonathan Matias | L | 2-0 |
| Masters d'Espagne - Qualif. | 2023/03/28 11:25 | Jia Heng Jason Teh v Jonathan Matias | W | 0-2 |
| Masters d'Espagne - Qualif. | 2023/03/28 08:10 | Jonathan Matias v Kalle Koljonen | W | 2-1 |
| Open de Pologne | 2023/03/24 11:00 | Jonathan Matias v Jia Heng Jason Teh | L | 0-2 |
| US Open 2019, MS | 2023/07/12 19:10 | Kai Schaefer v Koo Takahashi | W | 0-2 |
| US Open 2019, MS, Qualification | 2023/07/11 19:00 | Koo Takahashi v Parupalli, Kashyap | - | home |
| US Open 2019, MS, Qualification | 2023/07/11 16:15 | Koo Takahashi v Jhuo-Fu Liao | W | 2-0 |
| Thailand Int. | 2023/03/08 08:10 | Yu Jen Chi v Koo Takahashi | L | 2-0 |
| Thailand Int. | 2023/03/07 10:40 | Koo Takahashi v Lim, Chong King | W | 2-0 |
| Estonie Int. - | 2023/01/13 17:30 | Koo Takahashi v Joran Kweekel | L | 1-2 |
| Estonie Int. - | 2023/01/13 09:10 | Christian Faust Kjaer v Koo Takahashi | W | 0-2 |
| Irish Open | 2022/11/17 12:20 | Koo Takahashi v Lucas Claerbout | L | 0-2 |