| Davise karikas | 2017/02/05 08:00 | Lloyd Harris v Mattias Siimar | 7-5,6-3 |
| ITF Egypt F2 | 2017/01/23 08:00 | Libor Salaba v Mattias Siimar | 7-6,6-3 |
| ITF Egypt F2 | 2017/01/22 10:30 | Mattias Siimar v Nicolas Uryson | 6-2,6-7,6-4 |
| ITF Estonia F3 | 2016/11/01 12:05 | Alexander Vasilenko v Mattias Siimar | 6-1,6-3 |
| ITF Estonia F2 | 2016/10/27 14:30 | Kenneth Raisma v Mattias Siimar | 6-1,6-4 |
| ITF Estonia F2 | 2016/10/24 13:00 | Verneri Tuomi v Mattias Siimar | 3-6,0-6 |
| ITF Estonia F1 | 2016/07/26 22:00 | Yann Wojcik v Mattias Siimar | 7-5,7-6 |
| ITF Estonia F1 | 2016/07/25 22:00 | Mattias Siimar v Karl Kiur Saar | 2-6,6-3,6-3 |
| Davise karikas | 2017/04/07 16:25 | Kenneth Raisma v Lucas Catarina | 6-3,6-0,6-4 |
| ITF France F7 | 2017/03/23 11:00 | Lucas Catarina v Albano Olivetti | 4-6,4-6 |
| ITF France F7 Qual | 2017/03/19 10:00 | Lucas Catarina v Matteo Martineau | 6-3,3-6,6-2 |
| ITF France F7 Qual | 2017/03/18 08:00 | Lucas Catarina v Steven Broge | 6-0,6-2 |
| ITF France F6 Qual | 2017/03/13 08:00 | Lucas Catarina v Hugo Gaston | 6-0,2-6,2-6 |
| ITF France F6 Qual | 2017/03/12 12:30 | Lucas Catarina v Mathys Erhard | 6-3,6-4 |
| ITF France F5 | 2017/03/09 13:35 | Yannick Jankovits v Lucas Catarina | 6-1,6-4 |
| ITF France F5 | 2017/03/08 10:00 | Danylo Kalenichenko v Lucas Catarina | 4-6,6-7 |