Stadium: Center Court Round: 27 Ground: Clay
| ITF W25 Horb | 2019/07/25 12:00 | Ivana Popovic v Oana Georgeta Simion | 7-5,4-6,1-6 |
| ITF W25 Horb | 2019/07/24 14:25 | Anna Klasen v Oana Georgeta Simion | 2-6,0-6 |
| WTA Bucharest | 2019/07/13 07:00 | Patricia Maria Tig v Oana Georgeta Simion | 6-4,6-4 |
| ITF W25 Denain | 2019/07/03 16:25 | Oana Georgeta Simion v Tessah Andrianjafitrimo | 4-6,6-7 |
| Montpellier, Singles W-ITF-FRA-17A | 2019/06/19 16:00 | Irina Ramialison v Oana Georgeta Simion | 6-4,7-5 |
| Kaltenkirchen, Singles Qualifying W-ITF-GER-07A | 2019/06/13 09:30 | Natsumi Kawaguchi v Oana Georgeta Simion | 6-4,6-4 |
| Kaltenkirchen, Singles Qualifying W-ITF-GER-07A | 2019/06/12 08:25 | Prati, Federica v Oana Georgeta Simion | 3-6,3-6 |
| Kaltenkirchen, Singles Qualifying W-ITF-GER-07A | 2019/06/11 17:35 | Dalakishvili, Mariam v Oana Georgeta Simion | 1-6,2-6 |
| ITF W25 Horb | 2019/07/25 10:00 | Manon Leonard v Koelzer, Romy | 2-6,1-6 |
| ITF W25 Aschaffenburg | 2019/07/17 11:00 | Koelzer, Romy v Indy De Vroome | 2-6,1-6 |
| ITF W25 Den Haag | 2019/07/04 07:30 | Allie Kiick v Koelzer, Romy | 6-4,6-4 |
| ITF W25 Den Haag | 2019/07/03 07:30 | Malene Helgo v Koelzer, Romy | 5-7,5-7 |
| ITF W25 Den Haag | 2019/07/02 07:30 | Koelzer, Romy v Pirazhenka, Sviatlana | 7-5,4-6,10-6 |
| ITF W25 Den Haag | 2019/07/01 09:30 | Koelzer, Romy v Karregat, Dominique | 6-3,6-1 |
| ITF W25 Darmstadt | 2019/06/25 16:00 | Koelzer, Romy v Piter, Katarzyna | 5-7,6-2,2-6 |
| ITF W25 Ystad | 2019/06/19 10:25 | Koelzer, Romy v Hogenkamp, Richel | 1-6,4-6 |