Stadium: Centre Round: 25 Ground: Clay
| ITF M25 Jablonec Nad Nisou | 2021/05/16 08:30 | Jiri Krouzek v Vojtech Mares | 4-6,5-7 |
| ITF M25 Jablonec Nad Nisou | 2021/05/20 08:00 | Facundo Diaz Acosta v Franco Agamenone | 3-6,7-6,6-7 |
| ITF M25 Jablonec Nad Nisou | 2021/05/19 07:55 | Adam Pavlasek v Facundo Diaz Acosta | 2-6,3-6 |
| ITF M15 Valldoreix | 2021/05/15 09:00 | Alvaro Lopez San Martin v Facundo Diaz Acosta | 4-6,7-5,7-6 |
| ITF M15 Valldoreix | 2021/05/14 11:10 | Facundo Diaz Acosta v Alex M Pujolras | 6-4,6-2 |
| ITF M15 Valldoreix | 2021/05/13 08:00 | Facundo Diaz Acosta v Johan Nikles | 6-4,6-2 |
| ITF M15 Valldoreix | 2021/05/12 08:00 | Facundo Diaz Acosta v Thomas Laurent | 6-0,6-3 |
| ITF M15 Majadahonda | 2021/05/05 09:10 | Eduard Esteve Lobato v Facundo Diaz Acosta | 7-5,6-3 |
| Challenger Salinas 2 | 2021/04/28 17:00 | Facundo Diaz Acosta v Kevin King | 4-6,3-6 |