Stadium: Center Court Round: 54 Ground: Hardcourt indoor
| ITF W25 Seville | 2021/10/18 09:00 | Oana Georgeta Simion v Angela Fita Boluda | 4-6,2-6 |
| ITF W25 Seville | 2021/10/17 10:30 | Oana Georgeta Simion v Aleksandra Julia Zuchanska | 6-3,2-6,10-8 |
| UTR Pro Tennis Series Bucharest Women | 2021/10/09 12:45 | Aneta Kucmova v Oana Georgeta Simion | 7-5,2-6,5-4 |
| UTR Pro Tennis Series Bucharest Women | 2021/10/08 08:30 | Gaspar-Ivan, Ioana v Oana Georgeta Simion | 6-7,6-2,6-7 |
| UTR Pro Tennis Series Bucharest Women | 2021/10/07 08:00 | Oana Georgeta Simion v Georgia Andreea Craciun | 3-6,6-3,6-2 |
| UTR Pro Tennis Series Bucharest Women | 2021/10/06 07:00 | Oana Georgeta Simion v Bianca E Barbulescu | 6-2,5-1 |
| UTR Pro Tennis Series Bucharest Women | 2021/10/05 07:00 | Oana Georgeta Simion v Sava I Teodora | 6-0,5-1 |
| UTR Pro Tennis Series Bucharest Women | 2021/10/04 09:00 | Oana Georgeta Simion v Patricia Georgiana Goina | 6-2,5-3 |
| ITF W15 Cairo | 2021/01/28 07:55 | Viertler, Marion v Husaric, Anita | 1-6,6-7 |
| ITF W15 Cairo | 2021/01/27 10:20 | Elena Grekul v Viertler, Marion | 2-6,5-7 |
| ITF W15 Cairo | 2021/01/21 11:10 | Sinja Kraus v Viertler, Marion | 1-6,6-4,6-0 |
| ITF W15 Cairo | 2021/01/20 12:00 | Viertler, Marion v Bojana Marinkovic | 4-6,6-2,6-2 |
| ITF W15 Cairo | 2021/01/12 08:30 | Simmonds, Chanel v Viertler, Marion | 6-2,6-3 |
| ITF W25 Selva Gardena | 2020/12/14 09:40 | Federica Di Sarra v Viertler, Marion | 6-1,6-2 |
| ITF W25 Selva Gardena | 2020/12/13 11:45 | Sveva Bernardi v Viertler, Marion | 1-6,5-7 |
| ITF - W15 Héraklion | 2020/11/25 12:25 | Viertler, Marion v Karola Patricia Bejenaru | 4-6,5-7 |