| ITF Estonia F3 | 2016/11/01 13:25 | Kristofer Siimar v Vladimir Ivanov | 0-6,4-6 |
| ITF Estonia F2 | 2016/10/24 15:00 | Dzmitry Zhyrmont v Kristofer Siimar | 6-0,6-0 |
| ITF Estonia F1 | 2015/11/09 08:00 | Vitaly Kozyukov v Kristofer Siimar | 6-2,6-3 |
| ITF Estonia F3 | 2015/11/03 15:00 | Kenneth Raisma v Kristofer Siimar | 6-2,6-0 |
| ITF Lithuania F1 | 2015/07/21 10:25 | Claudio Fortuna v Kristofer Siimar | 7-5,6-0 |
| ITF Estonia F2 | 2014/07/19 07:00 | Kristofer Siimar v Kirill Saplin | 5-7,1-6 |
| ITF Estonia F1 | 2014/07/13 07:00 | Julius Tverijonas v Kristofer Siimar | 4-6,6-4,6-2 |
| Davise karikas | 2017/02/05 16:00 | Tilen Zitnik v Thomas Oger | 6-1,4-6,2-6 |