| ITF M25 Prostejov | 2021/08/17 07:55 | Robert Rumler v Nick Chappell | 0-6,4-6 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/04 15:30 | Robert Rumler v Shintaro Mochizuki | 6-3,3-6,2-6 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/02 14:10 | Robert Rumler v Piotr Galus | 7-5,7-6 |
| UTR Pro Tennis Series Copenhagen | 2021/06/14 08:00 | Robert Rumler v Sebastian Grundtvig Jorgensen | 0-0 |
| ITF M25 Prague | 2021/05/10 08:00 | Robert Rumler v Robin Stanek | 0-6,3-6 |
| ITF M25 Prague | 2021/05/09 07:30 | Marco Furlanetto v Robert Rumler | 6-7,6-1,7-10 |
| ITF M15 Olomouc | 2019/10/17 07:55 | Petr Nouza v Robert Rumler | 6-7,6-4,6-4 |
| ITF M15 Olomouc | 2019/10/16 09:20 | Robert Rumler v Karlo Cubelic | 4-6,6-4,6-1 |
| ITF M15 Pescara | 2021/08/16 07:15 | Julien De Cuyper v Daniele Spinnato | 1-6,3-6 |
| ITF M15 Pescara | 2021/08/15 11:30 | Antonio Campo v Julien De Cuyper | 3-6,6-3,6-10 |
| ITF M15 Esch/Alzette | 2021/07/20 10:55 | Julien De Cuyper v Tommaso Compagnucci | 2-6,1-6 |
| ITF M15 Esch/Alzette | 2021/07/19 11:00 | Tommaso Compagnucci v Julien De Cuyper | 6-1,6-1 |
| ITF M15 Esch/Alzette | 2021/07/18 11:30 | Ashot Mkrtchyan v Julien De Cuyper | 1-6,2-6 |
| ITF M25 Uriage | 2021/07/11 12:55 | Julien De Cuyper v Laurin Aerne | 6-3,7-5 |
| ITF M25 Bourg-en-Bresse | 2021/06/30 07:00 | Julien De Cuyper v Bradley Paliska | 7-5,1-6,4-6 |
| ITF M25 Bourg-en-Bresse | 2021/06/28 09:00 | Florent Bax v Julien De Cuyper | 6-3,6-0 |