Stadium: Court 3 Round: 25 Ground: Clay
| ITF M15 Cairo | 2021/01/21 08:00 | Toledo Bague, Pol v Johan Nikles | 4-6,2-6 |
| ITF M15 Majadahonda | 2021/05/09 10:00 | Nuno Borges v Johan Nikles | 4-6,3-6 |
| ITF M15 Majadahonda | 2021/05/08 09:45 | Oriol Roca Batalla v Johan Nikles | 6-3,4-6,3-6 |
| ITF M15 Majadahonda | 2021/05/07 08:30 | Johan Nikles v Pedro Vives Marcos | 6-0,4-6,7-6 |
| ITF M15 Majadahonda | 2021/05/05 07:00 | Luca Van Assche v Johan Nikles | 1-6,4-6 |
| ITF M15 LPD Gran Canaria | 2021/04/30 11:15 | Johan Nikles v Esteve Lobato, Eduard | 3-6,2-6 |
| ITF M15 LPD Gran Canaria | 2021/04/29 12:45 | Johan Nikles v Nicolas Moreno De Alboran | 6-3,6-4 |
| ITF M15 LPD Gran Canaria | 2021/04/28 09:55 | Johan Nikles v Netuschil, Marvin | 6-3,6-2 |
| ITF - M25 Reus | 2021/04/16 08:00 | Shintaro Mochizuki v Johan Nikles | 3-6,6-4,6-4 |
| ITF M15 Majadahonda | 2021/05/05 11:30 | Toledo Bague, Pol v Pedro Vives Marcos | 4-6,2-6 |
| ITF M15 Majadahonda | 2021/05/03 14:30 | Toledo Bague, Pol v Benjamin Winter Lopez | 3-6,6-1,10-4 |
| ITF M15 Majadahonda | 2021/05/03 10:45 | Toledo Bague, Pol v Juan Bautista Otegui | 6-2,7-5 |
| ITF M15 Majadahonda | 2021/05/02 13:15 | Toledo Bague, Pol v Alejandro Moro Canas | 6-4,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/05/01 15:00 | Jules Marie v Toledo Bague, Pol | 5-3 |
| UTR Pro Tennis Series Barcelona | 2021/04/30 09:30 | Noah Lopez v Toledo Bague, Pol | 2-6,3-6 |
| UTR Pro Tennis Series Barcelona | 2021/04/29 09:30 | Calvo Barcelo, Fermin v Toledo Bague, Pol | 2-6,0-6 |
| UTR Pro Tennis Series Barcelona | 2021/04/28 09:30 | Slobodchikov, Ronald v Toledo Bague, Pol | 2-6,2-6 |