Stadium: Court Guillermo Vilas Round: 15 Ground: Clay
| Challenger Campinas | 2020/12/01 17:20 | Guilherme Clezar v Facundo Mena | 4-6,4-6 |
| Challenger Lisbon | 2020/10/16 10:25 | Guilherme Clezar v Federico Gaio | 7-5,4-6,6-7 |
| Challenger Lisbon | 2020/10/15 12:30 | Nuno Borges v Guilherme Clezar | 3-6,6-7 |
| Challenger Lisbon | 2020/10/13 09:00 | Maxime Janvier v Guilherme Clezar | 6-7,2-6 |
| Challenger Lisbon | 2020/10/11 10:30 | Guilherme Clezar v Orlando Luz | 6-4,6-3 |
| Challenger Lisbon | 2020/10/10 11:30 | Guilherme Clezar v Joao Monteiro | 6-7,6-4,6-1 |
| Challenger Barcelona | 2020/10/03 13:10 | Brandon Nakashima v Guilherme Clezar | 6-2,6-2 |
| Challenger Split | 2020/09/27 08:00 | Guilherme Clezar v Tomas Barrios Vera | 2-6,3-6 |
| Challenger Campinas | 2020/12/06 14:00 | Roberto Carballes Baena v Francisco Cerundolo | 4-6,6-3,3-6 |
| Challenger Campinas | 2020/12/05 15:35 | Francisco Cerundolo v Felipe Meligeni Rodrigues Alves | 6-1,6-4 |
| Challenger Campinas | 2020/12/04 20:00 | Francisco Cerundolo v Facundo Bagnis | 6-2,7-5 |
| Challenger Campinas | 2020/12/03 16:00 | Francisco Cerundolo v Facundo Mena | 4-6,7-5,7-6 |
| Challenger Campinas | 2020/12/01 13:00 | Francisco Cerundolo v Pedro Sakamoto | 6-1,6-3 |
| Challenger Lima | 2020/11/27 17:10 | Francisco Cerundolo v Thiago Agustin Tirante | 2-6,0-6 |
| Challenger Lima | 2020/11/26 15:00 | Federico Coria v Francisco Cerundolo | 5-7,5-7 |
| Challenger Lima | 2020/11/24 19:00 | Jelle Sels v Francisco Cerundolo | 2-6,2-6 |