| Lithuanian Int. Qual | 2021/06/10 12:40 | Tadeas Brazda v Ramnish Kumar | L | 2-1 |
| Lithuanian Int. Qual | 2021/06/10 10:00 | Ramnish Kumar v Reznikas, Ignas | W | 2-0 |
| Slovenia Int. Qual | 2021/05/19 11:40 | Kilian Ming-Zhe Maurer v Ramnish Kumar | L | 2-0 |
| Slovenia Int. Qual | 2021/05/19 11:00 | Christian Tomic v Ramnish Kumar | W | 1-2 |
| Portuguese Int. Qual | 2021/05/06 08:40 | Ramnish Kumar v Richard Kuhl | L | 0-2 |
| Masters d'Espagne | 2021/05/19 08:40 | Burestedt, Felix v Piris, Carlos | L | 2-0 |
| Portuguese Int. Qual | 2021/05/06 12:00 | Thoegersen, M. v Piris, Carlos | L | 2-0 |
| Open de Pologne | 2021/03/26 12:50 | Tze Yong Ng v Piris, Carlos | L | 2-0 |
| Open de Pologne - Qualif. | 2021/03/25 18:40 | Piris, Carlos v Koenig, Joel | W | 2-0 |
| Open de Pologne - Qualif. | 2021/03/25 17:10 | Piris, Carlos v Karl Kert | W | 2-0 |
| Open de Pologne - Qualif. | 2021/03/25 12:00 | Piris, Carlos v Szymon Stokfisz | W | 2-0 |
| Portuguese Int. | 2020/11/06 15:30 | Piris, Carlos v Bernardo Atilano | L | 1-2 |
| Portuguese Int. | 2020/11/06 11:20 | Piris, Carlos v Chang, Joao | W | 2-0 |