Round: 62 Ground: Clay
| Davis Cup | 2017/04/09 11:10 | Kristofer Siimar v Thomas Oger | 4-6,4-6 |
| 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 |
| ITF Kazakhstan F3 Qual | 2017/04/09 04:00 | Linus Frost v Artem Dubrivnyy | 2-6,2-6 |
| ITF Kazakhstan F3 Qual | 2017/04/08 04:00 | Linus Frost v Grigoriy Lomakin | 6-3,7-6 |
| ITF Italy F4 Qual | 2017/03/12 09:00 | Michal Dembek v Linus Frost | 7-5,6-3 |
| ITF Italy F4 Qual | 2017/03/11 08:30 | Tommaso Metti v Linus Frost | 4-6,6-4,5-7 |
| ITF Italy F3 Qual | 2017/03/05 13:00 | Linus Frost v Francesco Salviato | 7-6,5-7,3-6 |
| ITF Italy F3 Qual | 2017/03/04 13:00 | Giorgio Ricca v Linus Frost | 6-4,2-6,4-6 |
| ITF Norway F3 | 2016/11/02 10:15 | Linus Frost v Dragos Nicolae Madaras | 4-6,4-6 |
| ITF Norway F3 | 2016/10/31 15:55 | Linus Frost v Simen Sunde Bratholm | 5-7,6-4,6-0 |