Stadium: Clay Court 12 Round: 28 Ground: Clay
| German Premier League Women | 2020/08/18 13:00 | Rosca, Andreea Amalia v Koelzer, Romy | 7-6,6-0 |
| ITF - W15 Héraklion | 2020/03/06 08:30 | Rosca, Andreea Amalia v Koelzer, Romy | 1-6,5-7 |
| ITF - W15 Héraklion | 2020/11/06 10:45 | Cadantu, Alexandra v Rosca, Andreea Amalia | 2-6,6-7 |
| ITF - W15 Héraklion | 2020/11/05 11:30 | Rosca, Andreea Amalia v Kilnarova, Monika | 6-2,6-3 |
| ITF - W15 Héraklion | 2020/11/04 08:00 | Rosca, Andreea Amalia v Ayumi Koshiishi | 6-4,7-6 |
| ITF - W15 Héraklion | 2020/11/01 08:55 | Cadantu, Alexandra v Rosca, Andreea Amalia | 4-6,6-3,6-3 |
| ITF - W15 Héraklion | 2020/10/31 12:25 | Dalila Spiteri v Rosca, Andreea Amalia | 6-2,3-6,2-6 |
| ITF - W15 Héraklion | 2020/10/31 08:00 | Schaeder, Laura v Rosca, Andreea Amalia | 1-6,4-6 |
| ITF - W15 Héraklion | 2020/10/30 08:30 | Ziva Falkner v Rosca, Andreea Amalia | 1-6,1-6 |
| ITF - W15 Héraklion | 2020/10/27 08:00 | Rosca, Andreea Amalia v Anna Bondar | 1-6,6-3,6-3 |
| ITF - W15 Héraklion | 2020/11/06 08:00 | Koelzer, Romy v Markova, Johana | 6-4,4-6,6-4 |
| ITF - W15 Héraklion | 2020/11/05 08:00 | Koelzer, Romy v Melania Delai | 4-6,6-2,6-3 |
| ITF - W15 Héraklion | 2020/11/03 09:00 | Detiuc, Anastasia v Koelzer, Romy | 6-4,0-6,0-6 |
| ITF - W15 Héraklion | 2020/10/31 13:00 | Cadantu, Alexandra v Koelzer, Romy | 6-3,6-1 |
| ITF - W15 Héraklion | 2020/10/31 07:55 | Rosca, Ioana Loredana v Koelzer, Romy | 3-6,6-2,4-6 |
| ITF - W15 Héraklion | 2020/10/30 10:10 | Koelzer, Romy v Astakhova, Darya | 6-4,0-6,6-3 |
| ITF - W15 Héraklion | 2020/10/27 08:00 | Dimitra Pavlou v Koelzer, Romy | 1-6,7-6,0-6 |
| ITF W25 Porto | 2020/09/27 12:30 | Koelzer, Romy v Riya Bhatia | 6-4,2-6,9-11 |