Stadium: Court 1 Round: 25 Ground: Clay
| Challenger Antalya | 2021/12/07 07:30 | Nerman Fatic v Pol Martin Tiffon | 2-6,6-0,6-0 |
| Challenger Antalya | 2021/11/29 13:00 | Pol Martin Tiffon v Mick Veldheer | 3-6,3-6 |
| Challenger Antalya | 2021/11/29 08:20 | Pol Martin Tiffon v Alex M Pujolras | 6-2,6-7,6-2 |
| ITF M15 Nules | 2021/11/18 09:00 | Pol Martin Tiffon v Franco Emanuel Egea | 7-5,2-6,4-6 |
| ITF M15 Nules | 2021/11/17 12:05 | Pol Martin Tiffon v Vilius Gaubas | 6-4,6-2 |
| Challenger Bogota | 2021/10/18 16:40 | Jesper De Jong v Pol Martin Tiffon | 7-6,7-6 |
| ITF M25 Lima | 2021/10/13 17:30 | Daniel Dutra Da Silva v Pol Martin Tiffon | 6-3,6-7,6-2 |
| ITF M25 Lima | 2021/10/08 16:30 | Pol Martin Tiffon v Wilson Leite | 3-6,6-1,3-6 |
| ITF M25 Nur-Sultan | 2021/10/27 06:10 | Denis Yevseyev v Markos Kalovelonis | 7-6,6-2 |
| ITF M25 Nur-Sultan | 2021/10/20 08:00 | Markos Kalovelonis v Dostanbek Tashbulatov | 6-3,3-6,4-6 |
| ITF M25 Pretoria | 2021/09/29 11:30 | Markos Kalovelonis v Michail Pervolarakis | 3-6,2-6 |
| ITF M25 Johannesburg | 2021/09/23 08:00 | Khololwam Montsi v Markos Kalovelonis | 6-1,6-3 |
| ITF M25 Johannesburg | 2021/09/22 08:35 | Markos Kalovelonis v Makoto Ochi | 6-4,6-4 |
| ITF M25 Lesa | 2021/08/25 10:45 | Andrea Basso v Markos Kalovelonis | 6-3,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/08/14 08:40 | Pablo Carretero v Markos Kalovelonis | 6-7,1-0 |
| UTR Pro Tennis Series Barcelona | 2021/08/12 13:00 | Markos Kalovelonis v Olexiy Kolisnyk | 4-6,4-6 |