| 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 |
| 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 Olomouc | 2019/10/15 08:00 | Bernardo A P E Oliveira v Robert Rumler | 2-6,2-6 |
| ITF M15 Novi Sad | 2021/08/03 12:40 | Pedro Boscardin Dias v Duje Kekez | 7-6,6-3 |
| ITF M15 Novi Sad | 2021/07/29 12:40 | Duje Kekez v Filip Misolic | 4-6,0-6 |
| ITF M15 Novi Sad | 2021/07/28 07:25 | Wilson Leite v Duje Kekez | 2-6,3-6 |
| ITF M15 Doboj | 2021/07/15 10:40 | Andrej Nedic v Duje Kekez | 0-6,2-6 |
| ITF M15 Doboj | 2021/07/14 08:30 | Duje Kekez v Aldin Setkic | 7-5,7-6 |
| ITF M25 Velenje | 2021/07/07 08:00 | Toby Alex Kodat v Duje Kekez | 3-6,6-1,7-5 |
| ITF M15 Sarajevo | 2021/06/03 09:00 | Skander Mansouri v Duje Kekez | 7-5,6-4 |
| ITF M15 Sarajevo | 2021/06/02 09:00 | Duje Kekez v Sebastian Prechtel | 6-1,6-1 |