Stadium: Cancha 1 Round: 28 Ground: Clay
| ITF M25 Lima | 2021/10/14 16:30 | Federico Zeballos v Soares Klier, Gilbert | 6-2,3-6,4-6 |
| ITF M25 Lima | 2021/10/12 17:00 | March, Antonio Cayetano v Soares Klier, Gilbert | 3-6,3-6 |
| Challenger - Santiago | 2021/10/03 19:50 | Soares Klier, Gilbert v Gomez-Herrera, Carlos | 6-3,2-6,3-6 |
| ITF M25 Medellin | 2021/09/19 15:00 | Soares Klier, Gilbert v Joao Lucas Reis da Silva | 6-2,6-2 |
| ITF M25 Medellin | 2021/09/18 14:50 | Pedro Sakamoto v Soares Klier, Gilbert | 3-6,6-7 |
| ITF M25 Medellin | 2021/09/17 15:00 | Soares Klier, Gilbert v Kohen, Alan | 6-2,4-6,6-1 |
| ITF M25 Medellin | 2021/09/16 15:00 | Soares Klier, Gilbert v Gomez, Mateo | 6-3,6-3 |
| ITF M25 Medellin | 2021/09/14 18:05 | Soares Klier, Gilbert v Enrique Bogo | 6-1,6-2 |
| ITF M25 Lima | 2021/10/15 15:00 | Gonzalo Villanueva v Jonathan Mridha | 5-7,6-7 |
| ITF M25 Lima | 2021/10/14 16:45 | Vallebuona, Duilio v Jonathan Mridha | 0-6,1-6 |
| ITF M25 Lima | 2021/10/13 20:45 | Huertas Del Pino Cordova, Arklon v Jonathan Mridha | 4-6,3-6 |
| Challenger - Santiago | 2021/10/04 16:00 | Oliver Crawford v Jonathan Mridha | 7-5,6-3 |
| Challenger - Santiago | 2021/10/03 19:55 | Jonathan Mridha v King, Evan | 6-3,3-6,6-0 |
| Challenger Murcia | 2021/09/27 09:00 | Emilio Nava v Jonathan Mridha | 6-4,7-5 |
| Challenger Murcia | 2021/09/26 10:40 | Manish Sureshkumar v Jonathan Mridha | 6-7,4-6 |
| ITF M25 Jonkoping | 2021/09/22 12:10 | Jonathan Mridha v Viktor Durasovic | 4-6,2-6 |