Stadium: Pista Central Round: 14 Ground: Clay
| Challenger Murcia | 2021/09/27 13:25 | Alexander Ritschard v Alvaro Lopez San Martin | 6-1,7-6 |
| Challenger Seville | 2021/09/08 17:45 | Pablo Andujar v Alvaro Lopez San Martin | 3-6,6-1,6-4 |
| Challenger Seville | 2021/09/07 09:00 | Alvaro Lopez San Martin v Benjamin Winter Lopez | 6-4,4-6,6-1 |
| ITF M25 Oviedo | 2021/09/04 10:00 | Oriol Roca Batalla v Alvaro Lopez San Martin | 7-6,6-1 |
| ITF M25 Oviedo | 2021/09/03 09:00 | Alvaro Lopez San Martin v Alejandro Garcia | 6-2,6-0 |
| ITF M25 Oviedo | 2021/09/02 10:20 | Johan Nikles v Alvaro Lopez San Martin | 6-7,6-4,5-7 |
| ITF M25 Oviedo | 2021/09/01 14:40 | Carlos Lopez Montagud v Alvaro Lopez San Martin | 4-6,6-2,2-6 |
| ITF M25 Oviedo | 2021/08/31 14:15 | Alex M Pujolras v Alvaro Lopez San Martin | 4-6,2-6 |
| Challenger Murcia | 2021/09/28 11:15 | Daniel Rincon v Alex Rybakov | 3-6,2-6 |
| ITF M15 Melilla | 2021/09/26 07:00 | Alex M Pujolras v Daniel Rincon | 6-2,6-1 |
| ITF M15 Melilla | 2021/09/25 12:10 | Daniel Rincon v Kirill Mishkin | 6-3,6-1 |
| ITF M15 Melilla | 2021/09/24 16:10 | Zakhar Trapeznikov v Daniel Rincon | 6-7,6-4,4-6 |
| Challenger Mallorca | 2021/08/31 12:55 | Daniel Rincon v Stefan Kozlov | 3-6,6-1,1-6 |
| ATP Mallorca | 2021/06/19 12:25 | Roberto Carballes Baena v Daniel Rincon | 6-2,6-1 |
| ITF M15 Valldoreix | 2021/05/12 07:55 | Louis Dussin v Daniel Rincon | 6-2,6-4 |
| ITF M15 Majadahonda | 2021/05/06 10:45 | Alex Rybakov v Daniel Rincon | 6-4,6-3 |