Stadium: Court 4 Round: 44 Ground: Hardcourt outdoor
| ITF - M15 Monastir | 2021/02/21 11:00 | Greif, Jonas v Brun, Thomas George | 6-4,6-0 |
| ITF - M15 Monastir | 2021/02/15 09:00 | Greif, Jonas v Timmermans, Jesse | 3-6,1-6 |
| ITF - M15 Monastir | 2021/02/14 09:00 | Alessandro Ingarao v Greif, Jonas | 6-7,2-6 |
| ITF - M15 Monastir | 2020/03/09 08:00 | Leopold Zima v Greif, Jonas | 6-3,6-4 |
| ITF - M15 Monastir | 2020/03/08 08:00 | Pirolt, Pietro v Greif, Jonas | 5-7,1-6 |
| ITF - M15 Monastir | 2020/02/02 08:00 | Giacalone, Omar v Greif, Jonas | 6-0,6-2 |
| ITF - M15 Antalya | 2019/12/16 08:00 | Volpi, Octavio v Greif, Jonas | 6-4,6-4 |
| Antalya, Qualifications Simples M-ITF-TUR-33A | 2019/12/08 09:30 | Gusev, Daniil v Greif, Jonas | 6-2,6-0 |
| ITF - M15 Monastir | 2021/02/17 12:35 | Mateus Alves v Kenneth Raisma | 6-3,7-5 |
| ITF - M15 Monastir | 2021/02/15 12:30 | Kenneth Raisma v Ajavon, Liova | 6-2,6-2 |
| ITF - M15 Monastir | 2021/02/15 09:00 | Kenneth Raisma v Lukas Neumayer | 6-4,6-4 |
| ITF - M15 Monastir | 2021/02/14 08:30 | Kenneth Raisma v Pietro Marino | 2-6,6-2,10-5 |
| ITF - M15 Monastir | 2021/02/08 09:00 | Kenneth Raisma v Kotzen, Alexander | 2-6,7-5,8-10 |
| ITF - M15 Monastir | 2021/02/07 12:30 | Kenneth Raisma v Raffael Schaer | 1-6,7-6,10-5 |
| ITF - M15 Monastir | 2020/11/29 08:30 | Kenneth Raisma v Ergi Kirkin | 6-1,4-6,1-6 |
| ITF - M15 Monastir | 2020/11/28 08:00 | Kenneth Raisma v Lipovsek Puches, Tomas | 6-1,7-6 |