Stadium: Court 4 Round: 26 Ground: Clay
| ITF M15 Melilla | 2021/09/24 09:00 | Daniel Merida Aguilar v Oscar Mesquida Berg | 7-5,3-6,3-6 |
| ITF M25 Pensacola | 2021/05/20 14:30 | Oscar Mesquida Berg v Peter Bertran | 4-6,1-6 |
| ITF M25 Pensacola | 2021/05/19 16:50 | Nick Chappell v Oscar Mesquida Berg | 5-7,6-4,3-6 |
| ITF M25 Pensacola | 2021/05/18 16:05 | Juncheng Shang v Oscar Mesquida Berg | 5-7,5-7 |
| ITF M25 Pensacola | 2021/05/17 15:00 | Caleb Strother v Oscar Mesquida Berg | 5-7,0-6 |
| ITF M25 Fayetteville | 2020/11/02 17:30 | Joshua Sheehy v Oscar Mesquida Berg | 7-6,3-6,10-8 |
| ITF M15 Cancun | 2020/03/11 14:00 | Maximiliano Estevez v Oscar Mesquida Berg | 6-2,6-3 |
| ITF M15 Cancun | 2020/03/09 15:00 | Felipe M Sarrasague v Oscar Mesquida Berg | 4-6,3-6 |
| ITF M15 Melilla | 2021/09/24 10:00 | Aaron Cohen v Diego F Flores | 3-6,6-4,3-6 |
| ITF M25 Sintra | 2021/09/15 11:55 | Yuta Shimizu v Diego F Flores | 6-2,6-7,6-2 |
| ITF M25 Sintra | 2021/09/14 13:15 | Diego F Flores v Hans Albert Schubert | 6-2,6-3 |
| ITF M25 Sintra | 2021/09/13 15:05 | Diego F Flores v Jaime Faria | 6-3,6-2 |
| ITF M25 Sintra | 2021/09/07 08:30 | Diego F Flores v Daniel Little | 6-4,0-6,6-10 |
| ITF M25 Sintra | 2021/09/06 10:05 | Diego F Flores v Alan Gleeson | 6-3,6-3 |
| ITF M15 Bratislava | 2021/08/24 10:00 | Vasil Kirkov v Diego F Flores | 6-3,6-3 |
| ITF M15 Bratislava | 2021/08/19 08:00 | Diego F Flores v Mate Valkusz | 2-6,6-2,5-7 |