Stadium: Court 1 Round: 25 Ground: Hardcourt indoor
| ITF M15 Bad Waltersdorf | 2021/08/29 07:00 | Lukas Rohseano v Patric Prinoth | 6-3,3-6,13-11 |
| ITF M25 Caslano | 2021/08/23 08:00 | Patric Prinoth v Joao Riquelme | 2-6,6-4,6-10 |
| ITF M15 Warmbad-Villach | 2021/08/15 15:30 | Leonardo Taddia v Patric Prinoth | 6-4,6-0 |
| ITF M25 Telfs | 2021/07/12 11:50 | Patric Prinoth v Martins Rocens | 3-6,7-5,4-10 |
| ITF M15 Gaiba | 2021/06/07 12:30 | Patric Prinoth v Federico Bertuccioli | 4-6,4-6 |
| ITF M25 Meerbusch | 2021/04/12 13:00 | Marvin Netuschil v Patric Prinoth | 6-1,6-1 |
| ITF M15 Antalya | 2021/03/14 07:00 | Patric Prinoth v Sidane Pontjodikromo | 3-6,5-7 |
| ITF M15 Antalya | 2021/02/28 09:00 | Patric Prinoth v Filip Misolic | 1-6,2-6 |
| ITF M25 Budapest | 2021/09/30 09:00 | Samuel Vincent Ruggeri v Fabian Marozsan | 6-3,4-6,4-6 |
| ITF M25 Budapest | 2021/09/29 07:30 | Samuel Vincent Ruggeri v Antonio Massara | 6-4,7-5 |
| ITF M15 Ulcinj | 2021/09/26 08:55 | Rrezart Cungu v Samuel Vincent Ruggeri | 6-3,2-6,6-1 |
| ITF M15 Ulcinj | 2021/09/25 08:00 | Samuel Vincent Ruggeri v Mariano Navone | 6-3,6-3 |
| ITF M15 Ulcinj | 2021/09/24 09:00 | Samuel Vincent Ruggeri v Alexis Musialek | 7-6,6-1 |
| ITF M15 Ulcinj | 2021/09/23 08:00 | Samuel Vincent Ruggeri v Joris Moret | 3-6,6-1,6-0 |
| ITF M15 Ulcinj | 2021/09/22 10:30 | Stefano Battaglino v Samuel Vincent Ruggeri | 3-6,4-6 |
| ITF M15 Ulcinj | 2021/09/17 08:00 | Timo Legout v Samuel Vincent Ruggeri | 6-2,7-6 |