Stadium: Court 1 Round: 25 Ground: Clay
| ITF M25 Plaisir | 2020/09/18 11:00 | Igor Sijsling v Guilherme Clezar | 6-4,6-4 |
| ITF M25 Plaisir | 2020/09/17 10:20 | Valentin Royer v Guilherme Clezar | 7-6,6-7,4-6 |
| ITF M25 Plaisir | 2020/09/16 12:10 | Alexis Gautier v Guilherme Clezar | 4-6,4-6 |
| Challenger Monterrey | 2020/03/05 20:30 | Guilherme Clezar v Kevin King | 6-7,6-4,4-6 |
| Challenger Monterrey | 2020/03/04 17:00 | Federico Coria v Guilherme Clezar | 1-6,7-6,6-7 |
| Challenger Monterrey | 2020/03/02 20:00 | Nicolas Mejia v Guilherme Clezar | 1-6,4-6 |
| Challenger Columbus | 2020/02/27 18:45 | Guilherme Clezar v Denis Istomin | 3-6,1-6 |
| Challenger Columbus | 2020/02/26 15:00 | Jason Kubler v Guilherme Clezar | 6-2,6-7,4-6 |
| ATP Kitzbuhel | 2020/09/07 13:50 | Federico Delbonis v Matthias Bachinger | 7-6,6-4 |
| Challenger Ostrava | 2020/08/30 11:00 | Vit Kopriva v Matthias Bachinger | 1-6,7-6,6-2 |
| Challenger Ostrava | 2020/08/29 13:25 | Alex Molcan v Matthias Bachinger | 3-6,0-6 |
| Challenger Trieste | 2020/08/22 08:00 | Matthias Bachinger v Luca Nardi | 6-7,0-6 |
| Challenger Prague | 2020/08/15 10:30 | Matthias Bachinger v Petr Nouza | 3-6,6-4,3-6 |
| DTB German Pro Series | 2020/06/26 09:45 | Peter Heller v Matthias Bachinger | 6-3,3-6,2-6 |
| DTB German Pro Series | 2020/06/25 08:00 | Matthias Bachinger v Philip Florig | 6-3,6-2 |
| DTB German Pro Series | 2020/06/24 08:00 | Matthias Bachinger v Peter Heller | 6-7,4-6 |