Stadium: Court 10 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Brasilia | 2021/11/01 12:00 | Marcelo Zormann v Ronaldo Alexandre | 6-0,6-2 |
| ITF M15 Cancun | 2021/10/17 18:00 | Ronaldo Alexandre v Andres Urrea | 2-6,2-6 |
| ITF M15 Cancun | 2021/10/10 18:00 | Luciano Doria v Ronaldo Alexandre | 6-1,6-1 |
| ITF M15 Cancun | 2021/10/03 15:30 | Ronaldo Alexandre v Miles Jones | 1-6,1-6 |
| ITF M15 Cancun | 2021/09/26 15:00 | Ronaldo Alexandre v Luca Moro Almeida | 6-4,6-7,6-10 |
| ITF M15 Cancun | 2021/09/19 14:00 | Ronaldo Alexandre v Alex Jones | 2-6,6-3,2-10 |
| ITF M15 Cancun | 2020/03/11 14:00 | Alfredo Perez v Ronaldo Alexandre | 6-0,6-0 |
| ITF M15 Cancun | 2020/02/16 15:00 | Emmett Ward v Ronaldo Alexandre | 6-0,6-0 |