Stadium: Court 2 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Portimao | 2021/10/27 09:00 | Sebastian Fanselow v Mehdi Sadaoui | 6-4,6-3 |
| ITF M25 Quinta Do Lago | 2021/10/21 09:00 | Sebastian Fanselow v Maximilian Neuchrist | 3-6,6-4,3-6 |
| ITF M25 Quinta Do Lago | 2021/10/20 08:55 | Sebastian Fanselow v Rio Noguchi | 6-3,7-6 |
| ITF M25 Loulé | 2021/10/13 15:40 | Sebastian Fanselow v Pedro Araujo | 4-6,6-1,0-6 |
| ITF M25 Setubal | 2021/10/08 12:05 | Arthur Cazaux v Sebastian Fanselow | 3-6,6-3,6-3 |
| ITF M25 Setubal | 2021/10/07 10:30 | Illia Stoliar v Sebastian Fanselow | 1-6,0-6 |
| ITF M25 Setubal | 2021/10/06 10:00 | Jumpei Yamasaki v Sebastian Fanselow | 6-4,4-6,4-6 |
| Challenger Lisabon | 2021/09/28 09:00 | Sebastian Fanselow v Nikola Milojevic | 4-6,4-6 |
| ITF M25 Portimao | 2021/10/27 10:55 | Pablo Llamas Ruiz v Rio Noguchi | 6-3,6-4 |
| Challenger Barcelona | 2021/10/05 14:30 | Oleksii Krutykh v Pablo Llamas Ruiz | 6-2,6-2 |
| Challenger Murcia | 2021/09/28 15:00 | Roberto Carballes Baena v Pablo Llamas Ruiz | 6-3,6-2 |
| ITF M25 Madrid | 2021/09/17 08:00 | Luca Nardi v Pablo Llamas Ruiz | 6-2,5-7,7-5 |
| ITF M25 Madrid | 2021/09/16 11:45 | Pablo Llamas Ruiz v Oscar Jose Gutierrez | 6-3,6-3 |
| ITF M25 Madrid | 2021/09/15 09:40 | Miguel Fernando Pereira v Pablo Llamas Ruiz | 3-6,3-6 |
| Challenger Sevilla | 2021/09/08 11:00 | Flavio Cobolli v Pablo Llamas Ruiz | 6-3,7-5 |
| ITF M25 Oviedo | 2021/09/01 10:30 | Oriol Roca Batalla v Pablo Llamas Ruiz | 7-6,7-5 |