Stadium: Court B Round: 26 Ground: Clay
| ITF W25 Platja D’Aro | 2021/05/18 09:00 | Cristiana Ferrando v Oana Georgeta Simion | 1-6,6-2,3-10 |
| ITF W25 Jonkoping | 2021/06/15 12:05 | Federica Arcidiacono v Oana Georgeta Simion | 6-4,4-6,4-6 |
| ITF W25 Platja D’Aro | 2021/05/19 08:55 | Qinwen Zheng v Oana Georgeta Simion | 6-2,7-6 |
| ITF W25 Platja D’Aro | 2021/05/18 09:00 | Cristiana Ferrando v Oana Georgeta Simion | 1-6,6-2,3-10 |
| ITF W25 Platja D’Aro | 2021/05/17 08:30 | Valeria Koussenkova v Oana Georgeta Simion | 3-6,0-6 |
| ITF W60 Saint-Gaudens | 2021/05/11 12:40 | Diane Parry v Oana Georgeta Simion | 7-5,6-1 |
| ITF W60 Saint-Gaudens | 2021/05/10 11:05 | Salma Djoubri v Oana Georgeta Simion | 6-3,5-7,8-10 |
| UTR Pro Tennis Series Bucharest Women | 2021/05/01 07:30 | Andreea Amalia Rosca v Oana Georgeta Simion | 6-3,6-4 |
| UTR Pro Tennis Series Bucharest Women | 2021/04/30 11:00 | Oana Georgeta Simion v Corneanu Smaranda | 6-2,3-6,5-2 |
| ITF W25 Jonkoping | 2021/06/14 11:30 | Cristiana Ferrando v Stefania Rubini | 6-2,7-5 |
| ITF W25 Grado | 2021/06/03 10:50 | Susan Bandecchi v Cristiana Ferrando | 6-0,7-5 |
| ITF W25 Grado | 2021/06/01 07:00 | Diana Marcinkevica v Cristiana Ferrando | 6-7,0-6 |
| ITF W25 Grado | 2021/05/31 10:30 | Cristiana Ferrando v Maria Marfutina | 6-4,6-3 |
| ITF W25 Otocec | 2021/05/27 09:35 | Federica Di Sarra v Cristiana Ferrando | 7-6,7-5 |
| ITF W25 Otocec | 2021/05/26 07:55 | Cristiana Ferrando v Lucia Bronzetti | 6-2,6-0 |
| ITF W25 Otocec | 2021/05/25 08:00 | Cristiana Ferrando v Nastja Kolar | 6-4,4-6,10-1 |
| ITF W25 Otocec | 2021/05/24 08:00 | Cristiana Ferrando v Anika Jaskova | 6-3,6-3 |