| Open de Finlande - Doubles Hommes | 04/27 08:00 | - | Kaljurand/Kasner v Lahtinen M / Overmark J | L | 2-0 | |
| Open de Finlande - Doubles Hommes | 04/26 16:10 | - | Honkanen/Paul v Lahtinen M / Overmark J | W | 0-2 | |
| Open de Finlande - Doubles Hommes | 04/26 10:55 | - | Lahtinen M / Overmark J v Talts/Talts | W | 2-0 | |
| International d'Islande - Doubles Hommes | 01/25 15:00 | 4 | Green A / Moore N v Lahtinen M / Overmark J | - | Walkover | |
| International d'Islande - Doubles Hommes | 01/24 15:40 | 5 | Lahtinen M / Overmark J v Ellertsson B M / Hognason E | W | 2-1 | |
| Estonie Int. - Doubles Hommes | 01/10 12:10 | - | Lahtinen M / Overmark J v Corvee S / Villeger W | L | 0-2 | |
| Slovenia Future Series MD Qual | 11/21 20:15 | - | Alic G / Poboljsaj M v Lahtinen M / Overmark J | W | 0-2 | |
| Slovenia Future Series MD Qual | 11/21 14:25 | - | Lahtinen M / Overmark J v Monroy J / Piris C | W | 2-0 | |
| Lithuanian Int. MD | 06/07 14:10 | - | Lahtinen M / Overmark J v Duijs G / Wassink B | L | 1-2 | |
| Finnish Open MD Qual | 04/04 15:00 | - | Lahtinen M / Overmark J v Leydon-Davis O / Manota A | L | 0-2 |