Round: 62 Ground: Hardcourt outdoor
| ITF Turkey F34 | 2018/10/28 07:00 | Juan P Canas Garcia v Umut Akkoyun | 6-1,6-2 |
| ITF Turkey F33 | 2018/10/24 08:45 | Sandro Kopp v Umut Akkoyun | 6-0,6-0 |
| ITF Turkey F32 | 2018/10/14 07:00 | Umut Akkoyun v Razvan M Codescu | 1-6,1-6 |
| Challenger - Istanbul | 2018/09/08 10:00 | Umut Akkoyun v Andrej Glvac | 4-6,6-4,3-6 |
| ITF Turkey F15 | 2018/04/14 09:30 | Mirko Cutuli v Umut Akkoyun | 6-2,6-4 |
| ITF Turkey F45 Qual | 2017/11/25 09:00 | Hamid Reza Nadaf v Umut Akkoyun | 6-4,6-0 |
| ITF Turkey F44 | 2017/11/18 06:45 | Liang-Yu Lin v Umut Akkoyun | 6-3,6-0 |
| Challenger Istanbul Qual | 2017/09/09 07:00 | Sefa Suluoglu v Umut Akkoyun | 6-4,7-5 |
| ITF Turkey F35 | 2018/11/04 07:00 | Flemming Peters v Bogdan Bajic | 0-6,6-2,7-5 |
| ITF Turkey F35 | 2018/11/03 07:00 | Ajay Pruthvi Nemakal v Bogdan Bajic | 4-6,2-6 |
| ITF Hungary F4 Qual | 2018/06/09 08:00 | Artur Kulibaba v Bogdan Bajic | 6-2,6-4 |
| ITF Bosnia and Herzegovina F3 Qual | 2018/05/28 15:45 | Bogdan Bajic v Aljaz Radinski | 4-6,4-6 |
| ITF Bosnia and Herzegovina F3 Qual | 2018/05/27 13:30 | Lawrence Bataljin v Bogdan Bajic | 2-6,6-3,1-6 |
| ITF Bosnia and Herzegovina F3 Qual | 2018/05/26 12:30 | Kevin Kylar v Bogdan Bajic | 6-4,4-6,5-7 |
| ITF Bosnia and Herzegovina F2 | 2018/05/23 08:00 | Duje Kekez v Bogdan Bajic | 6-1,3-6,7-5 |
| ITF Bosnia and Herzegovina F2 Qual | 2018/05/21 08:00 | Bogdan Bajic v Filip Maric | 7-5,6-0 |