Stadium: Court 3 Round: 62 Ground: Clay
| ITF M15 LPD Gran Canaria | 2021/05/02 09:30 | Alvaro Lopez San Martin v Kyrian Jacquet | 7-6,6-7,7-5 |
| ITF M15 LPD Gran Canaria | 2021/05/01 09:00 | Alvaro Lopez San Martin v Timofey Skatov | 6-4,6-3 |
| ITF M15 LPD Gran Canaria | 2021/04/30 11:15 | Alessandro Bega v Alvaro Lopez San Martin | 2-6,4-6 |
| ITF M15 LPD Gran Canaria | 2021/04/29 09:00 | Yan Bondarevskiy v Alvaro Lopez San Martin | 5-7,1-6 |
| ITF M15 LPD Gran Canaria | 2021/04/28 08:30 | Eric Vanshelboim v Alvaro Lopez San Martin | 3-6,2-6 |
| ITF M25 Angers | 2021/04/23 09:00 | Giovanni Mpetshi Perricard v Alvaro Lopez San Martin | 3-6,6-3,7-6 |
| ITF M25 Angers | 2021/04/22 13:30 | Alvaro Lopez San Martin v Sebastian Fanselow | 2-6,6-1,6-4 |
| ITF M25 Angers | 2021/04/21 13:20 | Alvaro Lopez San Martin v Baptiste Crepatte | 6-2,6-1 |
| ITF M15 Majadahonda | 2021/05/03 12:00 | Arthur Fils v Mario Mansilla Diez | 7-6,6-2 |
| ITF M15 Antalya | 2021/04/04 06:30 | Mario Mansilla Diez v Viacheslav Bielinskyi | 6-2,1-6,4-10 |
| ITF M15 Antalya | 2021/03/28 06:30 | Paul Woerner v Mario Mansilla Diez | 2-6,6-2,11-9 |
| ITF M25 La Nucia | 2021/03/14 08:00 | Carlos Lopez Montagud v Mario Mansilla Diez | 6-2,6-4 |
| ITF M15 La Nucia | 2021/03/09 11:00 | Mario Mansilla Diez v Miguel Damas | 6-3,3-6,3-10 |
| ITF M25 Villena | 2021/01/31 10:30 | Denis Klok v Mario Mansilla Diez | 6-2,6-3 |
| ITF M15 Getafe Madrid | 2020/11/29 13:00 | Mario Mansilla Diez v Michael Zhu | 3-6,5-7 |
| ITF M15 Benicarlo | 2020/11/22 08:30 | Mariano Alberto Hasenkopf v Mario Mansilla Diez | 6-7,6-1,10-7 |