Round: 25 Ground: Hardcourt outdoor
| ITF Women Heraklion | 2017/03/30 06:30 | Carol Zhao v Koelzer, Romy | 7-6,6-3 |
| ITF Women Heraklion | 2017/03/29 08:05 | Eklund, Mia v Koelzer, Romy | 6-1,5-7,2-6 |
| ITF Women Heraklion | 2017/03/27 06:30 | Koelzer, Romy v Dudlakova, Dagmar | 6-0,6-2 |
| ITF Women Heraklion | 2017/03/26 10:00 | Koelzer, Romy v Kuznetsova, Aleksandra | 6-2,6-4 |
| Tampa, Singles Qualifying W-WITF-USA-08A | 2017/03/13 13:00 | Koelzer, Romy v Subhash, Natasha | 3-6,3-6 |
| Orlando, Singles Qualifying W-WITF-USA-02A | 2017/03/08 16:30 | Whitney Osuigwe v Koelzer, Romy | 7-6,6-3 |
| Orlando, Singles Qualifying W-WITF-USA-02A | 2017/03/07 15:00 | Koelzer, Romy v Jada Robinson | 6-2,1-6,3-6 |
| Orlando, Singles Qualifying W-WITF-USA-02A | 2017/03/05 23:00 | Koelzer, Romy v Pulchartova, Laetitia | 6-2,7-6 |
| ITF Women Solarino | 2017/03/06 12:10 | van Der Hoek, Rosalie v Atucha Gomez, Ainhoa | 7-6,1-6,2-6 |
| Lotto NK Tennis Women | 2016/12/13 14:00 | van Der Hoek, Rosalie v Luttikhuis, Nikki | 6-4,6-4 |
| ITF Women Oslo | 2016/11/01 10:20 | Jacqueline Cabaj Awad v van Der Hoek, Rosalie | 6-1,7-6 |
| Lagos, Singles W-WITF-NGR-02A | 2016/10/19 08:44 | van Der Hoek, Rosalie v Tessah Andrianjafitrimo | 1-6,1-6 |
| Lagos, Singles W-WITF-NGR-02A | 2016/10/18 22:00 | van Der Hoek, Rosalie v Tessah Andrianjafitrimo | 1-6,1-6 |
| Lagos, Singles W-WITF-NGR-02A | 2016/10/16 22:00 | van Der Hoek, Rosalie v Ewijk, Chayenne | 6-3,6-2 |
| ITF Women Lagos Qual | 2016/10/15 22:00 | van Der Hoek, Rosalie v Airhunmwunde, Osariemen | 6-1,6-1 |
| Lagos, Singles W-WITF-NGR-02A | 2016/10/09 22:00 | Kolar, Nina v van Der Hoek, Rosalie | 3-6,6-7 |