Stadium: Court 8 Round: 44 Ground: Clay
| ITF M25 Ricany | 2021/08/29 10:30 | Giovanni Agostinetto v Marcelo Zormann | 3-6,4-6 |
| ITF M25 Poznan | 2021/08/25 12:50 | Matias Zukas v Marcelo Zormann | 6-3,4-6,7-6 |
| ITF M25 Poznan | 2021/08/24 15:10 | Jose Pereira v Marcelo Zormann | 4-6,3-6 |
| ITF M25 Poznan | 2021/08/24 08:00 | Marcelo Zormann v Mathieu Scaglia | 6-1,7-5 |
| ITF M25 Poznan | 2021/08/22 08:00 | Dominik Langmajer v Marcelo Zormann | 4-6,1-6 |
| UTR Pro Tennis Series Barcelona | 2021/06/24 08:30 | Agustin Velotti v Marcelo Zormann | 6-2,5-3 |
| UTR Pro Tennis Series Barcelona | 2021/06/23 08:00 | Marcelo Zormann v Alvaro Bueno Gil | 6-3,5-1 |
| UTR Pro Tennis Series Barcelona | 2021/06/22 09:30 | Marcelo Zormann v Mario Mansilla Diez | 7-5,6-3 |
| ITF M25 Ricany | 2021/08/29 10:30 | Lars Aregger v Krystof Zapsky | 6-7,2-6 |
| ITF M15 Lodz | 2021/08/16 08:00 | Kamil Gajewski v Krystof Zapsky | 6-3,6-3 |
| Challenger Prague | 2021/08/08 08:30 | Franco Agamenone v Krystof Zapsky | 6-2,6-3 |
| ITF M25 Wroclaw | 2021/06/27 14:00 | Toby Alex Kodat v Krystof Zapsky | 6-0,6-2 |
| ITF M25 Most | 2021/05/23 14:00 | Krystof Zapsky v Daniel Siniakov | 4-6,3-6 |
| ITF M25 Jablonec Nad Nisou | 2021/05/16 10:00 | Krystof Zapsky v Filip Duda | 6-4,3-6,9-11 |
| ITF M25 Prague | 2021/05/09 11:00 | Krystof Zapsky v Peter Goldsteiner | 3-6,4-6 |
| ITF M15 Monastir | 2019/12/15 08:00 | Mohamed Ali Abibsi v Krystof Zapsky | 3-6,4-6 |