Stadium: Court 6 Round: 62 Ground: Clay
| ITF M15 Cairo | 2021/04/11 11:00 | Stone, Zakai v Garmendia Olasagasti, Inigo | 2-6,5-7 |
| ITF - M25 La Nucia | 2021/03/14 13:00 | Garmendia Olasagasti, Inigo v Leopold Zima | 3-6,1-6 |
| ITF M15 La Nucia | 2021/03/08 11:00 | Garmendia Olasagasti, Inigo v Bas Mengual, Ivan | 2-6,2-6 |
| ITF M25 Villena | 2021/01/31 10:30 | Garmendia Olasagasti, Inigo v Mattia Bellucci | 3-6,4-6 |
| ITF M15 Benicarlo | 2020/11/22 09:30 | Oleg Prihodko v Garmendia Olasagasti, Inigo | 7-6,6-1 |
| ITF M15 Melilla | 2020/09/21 10:30 | Garmendia Olasagasti, Inigo v Pujol Navarro, Bruno | 2-6,7-5,5-10 |
| ITF M15 Sintra | 2020/09/13 08:30 | Garmendia Olasagasti, Inigo v March, Antonio Cayetano | 0-6,3-6 |
| ITF M15 Cairo | 2021/04/11 07:00 | Shohei Chikami v Fellin, Manfred | 6-7,2-6 |
| ITF - M15 Antalya | 2021/03/22 07:00 | Aleksandr Braynin v Fellin, Manfred | 6-2,6-3 |
| ITF - M15 Antalya | 2021/03/21 07:00 | Elijah Poritzky v Fellin, Manfred | 3-6,3-6 |
| ITF - M15 Antalya | 2021/03/14 07:00 | Nicolas Parizzia v Fellin, Manfred | 6-7,6-3,10-4 |
| ITF - M15 Antalya | 2021/03/08 09:00 | Radu Mihai Papoe v Fellin, Manfred | 7-5,6-2 |
| ITF - M15 Antalya | 2021/03/07 07:00 | Fellin, Manfred v Luca Tomasetto | 2-6,6-3,10-8 |
| ITF - M15 Antalya | 2021/02/23 06:30 | Fellin, Manfred v Oleksandr Ovcharenko | 1-6,5-7 |
| ITF - M15 Antalya | 2021/02/22 07:00 | Fellin, Manfred v Radu Mihai Papoe | 6-7,6-2,10-4 |