Stadium: Cancha 1 Round: 26 Ground: Clay
| 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 Poznan | 2021/08/25 10:00 | Harry Wendelken v Soares Klier, Gilbert | 3-6,6-4,6-2 |
| ITF M15 Lodz | 2021/08/21 08:00 | Soares Klier, Gilbert v Maciej Rajski | 4-6,6-7 |
| ITF M15 Lodz | 2021/08/20 10:15 | Daniel Michalski v Soares Klier, Gilbert | 6-4,3-6,3-6 |
| Challenger Lima | 2021/09/28 16:45 | Nicolas Kicker v Gomez-Herrera, Carlos | 6-4,2-6,6-4 |
| Challenger Lima | 2021/09/27 16:50 | Gomez-Herrera, Carlos v Thirouin, Jean | 6-1,3-6,6-1 |
| Challenger Lima | 2021/09/26 20:50 | Gomez-Herrera, Carlos v Luca Castelnuovo | 7-5,6-0 |
| Ambato, Ecuador | 2021/09/23 16:55 | Thiago Agustin Tirante v Gomez-Herrera, Carlos | 7-6,3-6,7-6 |
| Ambato, Ecuador | 2021/09/20 20:00 | Gomez-Herrera, Carlos v Esteve Lobato, Eduard | 6-4,6-7,6-3 |
| Challenger Quito | 2021/09/14 21:05 | Gomez-Herrera, Carlos v Menendez-Maceiras, Adrian | 2-6,4-6 |
| Challenger Banja Luka | 2021/09/10 10:35 | Martin, Andrej v Gomez-Herrera, Carlos | 7-6,6-3 |
| Challenger Banja Luka | 2021/09/08 11:20 | Gomez-Herrera, Carlos v Sumit Nagal | 7-5,6-3 |