| Eastern European Championship | 2020/11/17 12:30 | Nerman Fatic v Duje Kekez | 6-3,7-6 |
| Eastern European Championship | 2020/11/16 08:00 | Jaimee Floyd Angele v Duje Kekez | 3-6,4-6 |
| Challenger Split | 2020/09/26 13:55 | Guilherme Clezar v Duje Kekez | 6-2,6-3 |
| Adriatic Tennis Series | 2020/06/16 11:00 | Nikola Mektic v Duje Kekez | 6-2,6-1 |
| ITF M15 Porec | 2020/03/09 10:15 | Duje Kekez v Tomislav Jotovski | 2-6,2-6 |
| ITF M15 Porec | 2020/03/08 10:55 | Duje Kekez v Alen Rogic-Hadzalic | 7-5,6-2 |
| ITF M15 Cairo | 2020/01/16 10:25 | Duje Kekez v Petr Hajek | 5-7,6-2,3-6 |
| ITF M15 Cairo | 2020/01/15 09:15 | Mathieu Perchicot v Duje Kekez | 4-6,4-6 |
| Eastern European Championship | 2020/11/16 09:30 | Nerman Fatic v Koray Kirci | 6-4,6-0 |
| Challenger Istanbul | 2020/10/17 07:30 | Koray Kirci v Tristan Lamasine | 2-6,2-6 |
| Eastern European Championship | 2020/07/31 08:00 | Koray Kirci v Arsenije Zlatanovic | 6-0,6-2 |
| Eastern European Championship | 2020/07/30 08:00 | Viktor Troicki v Koray Kirci | 4-6,6-0,7-6 |
| Eastern European Championship | 2020/07/28 08:00 | Koray Kirci v Petar Pjevcevic | 6-2,6-3 |
| Eastern European Championship | 2020/07/27 08:00 | Aziz Kijametovic v Koray Kirci | 6-7,5-7 |
| ITF M15 Antalya | 2019/12/03 07:00 | Koray Kirci v Bart Stevens | 7-5,3-6,0-6 |
| ITF M15 Antalya | 2019/11/28 08:00 | Koray Kirci v Pavel Nejedly | 2-6,6-7 |