Stadium: Court 2 Round: 25
| ITF Women Tampere | 2018/07/25 14:20 | Francesca Jones v Suomalainen, Piia | 6-1,6-3 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/05/14 07:30 | Suomalainen, Piia v Velcea , Andreea | 6-2,5-7,6-3 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/05/11 09:55 | Suomalainen, Piia v Zakarlyuk, Marianna | 6-7,3-6 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/05/10 07:30 | Suomalainen, Piia v Karvouni, Vasiliki | 6-3,6-2 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/05/09 09:05 | Ipek Oz v Suomalainen, Piia | 4-6,4-6 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/05/02 11:30 | Suomalainen, Piia v Pospelova, Aleksandra | 3-6,6-3,4-6 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/04/30 07:30 | Suomalainen, Piia v Garshong, Iman | 6-0,6-1 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/04/25 09:40 | Suomalainen, Piia v Julia Stamatova | 6-2,1-6,3-6 |
| ITF Women Savitaipale | 2018/07/30 08:00 | Ahti, Venla v Berlin, Sydney | 3-6,2-6 |
| ITF Women Savitaipale | 2018/07/29 10:00 | Berlin, Sydney v Shaulskaya, Anastasia | 4-6,6-4,6-1 |
| ITF Women Sandelfjord | 2018/07/26 11:00 | Berlin, Sydney v Ponomar, Lisa | 2-6,1-6 |
| ITF Women Sandelfjord | 2018/07/25 09:00 | Ina Kaufinger v Berlin, Sydney | 2-6,0-6 |
| ITF Women Sandelfjord | 2018/07/24 10:30 | Berlin, Sydney v Alhach, Raffaela | 6-4,6-1 |
| ITF Women Sandelfjord | 2018/07/21 09:00 | Berlin, Sydney v Kompalka, Ximena | 6-0,6-2 |
| ITF Women Bastad Qual | 2018/06/24 11:40 | Berlin, Sydney v Chen, Pei Hsuan | 4-6,4-6 |
| ITF Women Ystad Qual | 2018/06/16 13:10 | Raveena Kingsley v Berlin, Sydney | 6-1,6-1 |