Stadium: Court 1 Round: 25 Ground: Clay
| ITF M15 Monastir | 2021/07/08 08:30 | Rinky Hijikata v Timur Kiyamov | 7-5,6-1 |
| ITF M15 Monastir | 2021/07/07 10:05 | Timur Kiyamov v Shohei Chikami | 6-3,6-0 |
| ITF M15 Monastir | 2021/06/27 10:30 | Timur Kiyamov v Kody Pearson | 6-4,5-7,6-10 |
| ITF M15 Monastir | 2021/06/21 09:00 | Timur Kiyamov v Miles Jones | 6-3,3-6,12-14 |
| ITF M15 Monastir | 2021/06/20 12:00 | Timur Kiyamov v Dong Ju Kim | 7-6,6-3 |
| ITF M15 St Petersburg | 2021/04/13 09:00 | Timur Kiyamov v Sarp Agabigun | 6-7,4-6 |
| ITF M15 St Petersburg | 2021/04/12 07:00 | Timur Kiyamov v Victor Ernaelsteen | 6-2,6-2 |
| ITF M15 St Petersburg | 2021/04/11 08:05 | Timur Kiyamov v Iznaur Akhmaev | 6-1,6-0 |
| ITF M15 Antalya | 2021/04/28 10:00 | Jacopo Berrettini v Koray Kirci | 6-2,6-0 |
| ITF M15 Antalya | 2021/04/27 07:00 | Michalis Sakellaridis v Koray Kirci | 1-6,3-6 |
| ITF M15 Antalya | 2021/04/26 09:00 | Louroi Martinez v Koray Kirci | 6-7,3-6 |
| ITF M15 Antalya | 2021/04/25 07:00 | Mirko Lagasio v Koray Kirci | 2-6,6-7 |
| ITF M15 Antalya | 2021/04/20 08:30 | Koray Kirci v Christopher Heyman | 1-6,1-6 |
| ITF M15 Antalya | 2021/03/30 06:45 | Koray Kirci v Seong Chan Hong | 1-6,1-6 |
| ITF M15 Antalya | 2021/03/24 07:30 | Georgii Kravchenko v Koray Kirci | 6-3,3-6,6-3 |
| ITF M15 Antalya | 2021/03/18 08:45 | Nicholas David Ionel v Koray Kirci | 6-0,6-1 |