Stadium: Court 3 Round: 25 Ground: Hardcourt outdoor
| ITF - M15 Valldoreix | 2021/05/09 13:00 | Francisco Andreu Garcia v Alex M Pujolras | 4-6,5-7 |
| ITF - M15 Majadahonda | 2021/05/02 16:15 | Giovanni Mpetshi Perricard v Francisco Andreu Garcia | 6-3,6-1 |
| ITF - M15 LPD Gran Canaria | 2021/04/28 13:50 | Francisco Andreu Garcia v Diego A B Sanchez | 6-7,6-7 |
| ITF M15 Las Palmas | 2021/04/27 08:00 | Lilian Marmousez v Francisco Andreu Garcia | 6-4,5-7,7-10 |
| ITF M15 Las Palmas | 2021/04/26 08:30 | Nikita Alosha v Francisco Andreu Garcia | 3-6,1-6 |
| ITF - M25 Reus | 2021/04/13 07:30 | Kenny de Schepper v Francisco Andreu Garcia | 6-3,6-4 |
| ITF - M25 Reus | 2021/04/11 07:00 | Noah Regas v Francisco Andreu Garcia | 6-3,1-6,3-10 |
| ITF - M25 La Nucia | 2021/03/16 10:10 | Gianmarco Amatiste v Francisco Andreu Garcia | 4-6,7-5,3-10 |
| ITF - M15 Troisdorf | 2021/05/14 11:00 | Yannick Mertens v Elmar Ejupovic | 2-6,1-6 |
| ITF - M15 Troisdorf | 2021/05/13 09:00 | Yannick Mertens v Luke Johnson | 7-6,6-4 |
| ITF - M15 Troisdorf | 2021/05/12 12:00 | Yannick Mertens v Max Wiskandt | 7-6,6-3 |
| ITF - M15 Sibenik | 2021/04/21 12:05 | Gergely Madarasz v Yannick Mertens | 6-4,5-7,6-3 |
| ITF - M25 Meerbusch | 2021/04/15 10:00 | Alexander Erler v Yannick Mertens | 6-3,3-6,6-1 |
| ITF - M25 Meerbusch | 2021/04/13 13:30 | Yannick Mertens v Jeroen Vanneste | 6-3,6-4 |
| ITF - M15 Monastir | 2021/03/11 08:30 | Yannick Mertens v Naoki Nakagawa | 6-4,3-6,4-6 |
| ITF - M15 Monastir | 2021/03/10 10:30 | Yannick Mertens v Constantin Schmitz | 6-0,6-2 |