Stadium: Court 13 Round: 27 Ground: Clay
| 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 Eduard Esteve Lobato | 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 Marvin Netuschil | 6-3,6-2 |
| ITF - M25 Reus | 2021/04/16 08:00 | Shintaro Mochizuki v Johan Nikles | 3-6,6-4,6-4 |
| ITF - M25 Reus | 2021/04/15 08:00 | Johan Nikles v Miguel Damas | 6-0,6-1 |
| ITF - M25 Reus | 2021/04/13 09:05 | Johan Nikles v Jordi Garcia Mestre | 6-2,6-2 |
| ITF - M25 Biel | 2021/03/30 13:10 | Johan Nikles v Dan Added | 2-6,6-3,1-6 |
| ITF - M15 Majadahonda | 2021/05/06 10:30 | Pedro Vives Marcos v Nicolas Alvarez Varona | 6-3,6-7,6-4 |
| ITF - M15 Majadahonda | 2021/05/05 11:30 | Pol Toledo Bague v Pedro Vives Marcos | 4-6,2-6 |
| ITF - M15 Majadahonda | 2021/05/03 14:30 | Pedro Vives Marcos v Emilien Voisin | 6-4,7-5 |
| ITF - M15 Majadahonda | 2021/05/03 10:45 | Pedro Vives Marcos v Simon Beaupain | 6-4,6-1 |
| ITF - M15 Majadahonda | 2021/05/02 14:45 | Pedro Vives Marcos v Juan Ignacio Alcalde | 6-3,7-5 |
| ITF - M15 LPD Gran Canaria | 2021/04/27 11:20 | Pedro Vives Marcos v Ergi Kirkin | 6-7,7-6,3-6 |
| ITF - M25 Reus | 2021/04/14 14:30 | Pedro Vives Marcos v Johan Sebastien Tatlot | 4-6,0-6 |
| ITF - M15 Antalya | 2021/03/31 11:55 | Pedro Vives Marcos v Pablo Llamas Ruiz | 6-3,2-6,3-6 |