Stadium: Center Court Round: 26 Ground: Clay
| ITF Netherlands F2 MD | 2018/07/05 18:00 | Heliovaara H / Niklas-Salminen P v Brouwer G / Sels J | 6-4,0-6,6-10 |
| ITF Netherlands F2 MD | 2018/07/04 14:30 | Heliovaara H / Niklas-Salminen P v de Krom/Nijboer | 6-1,6-2 |
| ITF Netherlands F2 MD | 2018/07/02 15:50 | Heliovaara H / Niklas-Salminen P v Bothwell P / Bothwell S | 6-2,6-1 |
| ITF China F6 MD | 2018/05/18 06:00 | Heliovaara H / Niklas-Salminen P v Gao X / TE R | 6-2,6-3 |
| ITF China F6 MD | 2018/05/17 05:30 | Casey Alcantara/Sun v Heliovaara H / Niklas-Salminen P | 3-6,1-6 |
| ITF China F6 MD | 2018/05/16 06:00 | Heliovaara H / Niklas-Salminen P v He Y / Lee K-Y | 6-3,6-2 |
| ITF China F6 MD | 2018/05/15 06:20 | Heliovaara H / Niklas-Salminen P v Kim C-E / Wang A | 6-3,6-1 |
| ITF China F5 MD | 2018/05/11 07:30 | Heliovaara H / Niklas-Salminen P v Imai S / Shimizu Y | 6-1,6-7,10-4 |