Stadium: Court 4 Round: 28 Ground: Hardcourt indoor
| ITF Estonia F1 | 2015/11/11 13:25 | Vladimir Ivanov v Mattias Siimar | 6-4,6-7,6-2 |
| ITF M15 Parnu | 2020/11/06 08:00 | Simon Freund v Mattias Siimar | 1-6,6-3,1-6 |
| ITF M15 Parnu | 2020/11/05 11:10 | Mattias Siimar v Kristjan Tamm | 6-3,6-7,6-3 |
| ITF M15 Parnu | 2020/11/04 08:00 | Mattias Siimar v Roni Mikael Hietaranta | 6-3,6-2 |
| ITF M15 East Lansing | 2019/11/20 21:15 | Cannon Kingsley v Mattias Siimar | 7-5,6-2 |
| ITF M15 Helsinki | 2019/08/20 08:30 | Mattias Siimar v Roni Rikkonen | 5-7,6-0,9-11 |
| ITF M15 Helsinki | 2019/08/19 10:00 | Mattias Siimar v Tomas Vanko | 6-1,6-0 |
| ITF M15 Parnu | 2019/07/15 07:00 | Mattias Siimar v Tadas Babelis | 6-2,3-6,13-15 |
| ITF Finland F2 | 2018/08/08 12:55 | Mattias Siimar v Gustav Hansson | 2-6,2-6 |
| ITF M15 Kazan | 2021/03/10 12:50 | Shalva Dzhanashia v Vladimir Ivanov | 6-0,2-6,6-3 |
| ITF M15 St Petersburg | 2021/02/11 09:50 | Alexander Vasilenko v Vladimir Ivanov | 6-2,6-0 |
| ITF M15 St Petersburg | 2021/02/10 08:35 | Vladimir Ivanov v Andrea Guerrieri | 6-4,6-2 |
| ITF M15 St Petersburg | 2021/02/04 09:00 | Alibek Kachmazov v Vladimir Ivanov | 6-1,6-0 |
| ITF M15 St Petersburg | 2021/02/03 07:00 | Vladimir Ivanov v Andrea Guerrieri | 6-4,7-5 |
| ITF M15 Parnu | 2020/11/05 08:00 | Vladimir Ivanov v Eric Vanshelboim | 7-5,4-6,4-6 |
| ITF M15 Parnu | 2020/11/04 09:40 | Vladimir Ivanov v Eero Vasa | 1-6,7-5,6-0 |
| ITF M15 Monastir | 2020/10/22 08:00 | Tomas Lipovsek Puches v Vladimir Ivanov | 7-5,7-6 |