Round: 60 Ground: Clay
| ITF Croatia F2 | 2017/03/12 08:30 | Edoardo Pompei v Klemen Nikolas | 7-5,6-2 |
| ITF Croatia F2 | 2017/03/11 10:00 | Nino Krneta v Klemen Nikolas | 5-7,4-6 |
| ITF Croatia F1 | 2017/03/05 08:00 | Klemen Nikolas v Jakob Johansson-Holm | 1-6,1-6 |
| ITF Croatia F1 | 2017/03/04 08:00 | Roko Horvat v Klemen Nikolas | 6-0,2-6,3-6 |
| ITF Germany F3 | 2017/01/22 11:30 | Klemen Nikolas v Benjamin Hassan | 2-6,6-1,4-6 |
| ITF Turkey F47 Qual | 2016/11/19 06:00 | Klemen Nikolas v Andrej Glvac | 3-6,1-6 |
| ITF Serbia F1 Qual | 2016/07/16 10:00 | Klemen Nikolas v Martin Dimitrov | 3-6,3-6 |
| ITF Turkey F28 Qual | 2016/07/10 13:00 | Mohammad A A K Akbar v Klemen Nikolas | 7-5,6-1 |
| ITF Croatia F3 | 2017/03/18 08:00 | Venci Ivanov v Kevin Kralj | 0-6,0-6 |
| ITF Croatia F2 | 2017/03/11 08:00 | Tim Van Terheijden v Kevin Kralj | 6-1,6-1 |
| Tšehhi Extraliga - NP | 2016/10/31 12:00 | Kevin Kralj v Toni Neykov | 2-6,3-6 |
| ITF Greece F7 | 2016/10/22 07:00 | Daniel Eger v Kevin Kralj | 6-3,6-3 |
| ITF Serbia F6 | 2016/09/04 10:00 | Milos Dabic v Kevin Kralj | 6-3,7-5 |
| ITF Serbia F6 | 2016/09/03 13:00 | Klim Ivanov v Kevin Kralj | 1-6,1-6 |
| ITF Greece F2 | 2016/03/30 10:30 | Alex Molcan v Kevin Kralj | 6-1,7-5 |
| ITF Greece F1 | 2016/03/19 10:00 | Javier Nunez v Kevin Kralj | 2-6,0-6 |