| ITF Women Oeiras | 2017/05/19 09:30 | Sanesi, Gaia v Koelzer, Romy | 6-2,6-4 |
| ITF Women Oeiras | 2017/05/18 09:00 | Quiterio, Lucia v Koelzer, Romy | 3-6,0-6 |
| ITF Women Oeiras | 2017/05/17 10:35 | Giorgia Pinto v Koelzer, Romy | 1-6,6-7 |
| ITF Women Oeiras | 2017/05/16 10:45 | Koelzer, Romy v Martina Spigarelli | 6-0,6-4 |
| ITF Women Chiasso | 2017/04/19 10:05 | Georges, Myrtille v Koelzer, Romy | 6-2,6-3 |
| ITF Women Chiasso Qual | 2017/04/17 10:05 | Brianti, Alberta v Koelzer, Romy | 6-2,2-6,6-7 |
| ITF Women Chiasso Qual | 2017/04/16 13:25 | Palmigiano, Francesca v Koelzer, Romy | 1-6,5-7 |
| ITF Women Heraklion | 2017/04/07 06:30 | Negreanu, Daiana v Koelzer, Romy | 6-1,6-1 |
| Altenkirchen, Qualifications Simples W-WITF-GER-02A | 2017/02/12 10:00 | Carreras, Amanda v Langenstein, Birte | 6-0,6-2 |