| International d'Islande - Doubles Hommes | 2020/01/24 15:40 | Lahtinen M / Overmark J v Ellertsson B M / Hognason E | W | 2-1 |
| Estonie Int. - Doubles Hommes | 2020/01/10 12:10 | Lahtinen M / Overmark J v Corvee S / Villeger W | L | 0-2 |
| Slovenia Future Series MD Qual | 2019/11/21 20:15 | Alic G / Poboljsaj M v Lahtinen M / Overmark J | W | 0-2 |
| Slovenia Future Series MD Qual | 2019/11/21 14:25 | Lahtinen M / Overmark J v Monroy J / Piris C | W | 2-0 |
| Lithuanian Int. MD | 2019/06/07 14:10 | Lahtinen M / Overmark J v Duijs G / Wassink B | L | 1-2 |
| Finnish Open MD Qual | 2019/04/04 15:00 | Lahtinen M / Overmark J v Leydon-Davis O / Manota A | L | 0-2 |