Stadium: Quadra Central Round: 25 Ground: Hardcourt outdoor
| ITF M15 Cairo | 2021/08/04 10:55 | Gustavo Heide v Mathys Erhard | 0-6,1-6 |
| ITF M15 Cairo | 2021/07/30 08:00 | Juan Bautista Torres v Gustavo Heide | 7-6,6-1 |
| ITF M15 Cairo | 2021/07/29 08:00 | Gustavo Heide v Kai Wehnelt | 3-6,7-5,6-3 |
| ITF M15 Cairo | 2021/07/28 12:30 | Gustavo Heide v Jaimee Floyd Angele | 6-4,2-6,6-0 |
| ITF M15 Monastir | 2021/06/01 12:35 | Robert Strombachs v Gustavo Heide | 6-0,6-4 |
| ITF M15 Monastir | 2021/05/26 14:25 | Gustavo Heide v Eliakim Coulibaly | 4-6,3-6 |
| ITF M15 Monastir | 2021/05/21 08:30 | Gustavo Heide v Yunseong Chung | 3-6,3-6 |
| ITF M15 Monastir | 2021/05/20 11:25 | Gustavo Heide v Berk Ilkel | 7-5,6-4 |
| ATP Gstaad | 2021/07/20 15:05 | Tallon Griekspoor v Juan Ignacio Londero | 7-5,4-6,7-6 |
| Challenger Salzburg | 2021/07/10 11:50 | Federico Coria v Juan Ignacio Londero | 6-1,6-4 |
| Challenger Salzburg | 2021/07/09 16:00 | Juan Ignacio Londero v Pablo Cuevas | 6-3,6-0 |
| Challenger Salzburg | 2021/07/08 09:00 | Juan Ignacio Londero v Alexey Vatutin | 6-0,2-6,6-0 |
| Challenger Salzburg | 2021/07/06 10:55 | Taro Daniel v Juan Ignacio Londero | 4-6,4-6 |
| Wimbledon | 2021/06/29 17:35 | Juan Ignacio Londero v Gianluca Mager | 6-7,0-6,6-4,3-6 |
| French Open | 2021/05/30 13:05 | Juan Ignacio Londero v Cristian Garin | 6-3,4-6,6-7,2-6 |
| Challenger Oeiras | 2021/05/17 11:30 | Leonardo Mayer v Juan Ignacio Londero | 4-6,6-1,6-4 |