Ground: Clay
| ITF W15 Bucharest | 2025/05/13 09:00 | Diana-Ioana Simionescu v Elena Ruxandra Bertea | 4-6,2-6 |
| ITF W15 Bucharest | 2025/05/06 08:06 | Maria Sara Popa v Diana-Ioana Simionescu | 7-6,6-2 |
| ITF W15 Antalya | 2025/03/20 12:00 | Arina Bulatova v Diana-Ioana Simionescu | 4-6,6-1,6-2 |
| ITF W15 Antalya | 2025/03/19 12:30 | Diana-Ioana Simionescu v Ekaterina Ovcharenko | 6-1,4-6,5-3 |
| ITF W15 Antalya | 2025/03/14 09:30 | Diana-Ioana Simionescu v Yelyzaveta Kotliar | 2-6,6-2,3-6 |
| ITF W15 Antalya | 2025/03/13 08:00 | Ilinca D Amariei v Diana-Ioana Simionescu | 7-5,5-7,4-6 |
| ITF W15 Antalya | 2025/03/12 07:00 | Diana-Ioana Simionescu v Karine Sarkisova | 6-3,6-3 |
| ITF W15 Antalya | 2025/03/06 09:00 | Alice Rame v Diana-Ioana Simionescu | 2-6,6-2,6-2 |
| ITF W75 Saint-Gaudens | 2025/05/08 12:15 | Oana Georgeta Simion v Carole Monnet | 2-6,5-7 |
| ITF W75 Saint-Gaudens | 2025/05/07 16:41 | Oana Georgeta Simion v Jenny Lim | 6-3,1-6,6-6 |
| ITF W75 Saint-Gaudens | 2025/05/06 09:30 | Oana Georgeta Simion v Gabriela Ce | 7-6,4-6,7-5 |
| ITF W15 Oegstgeest | 2025/04/29 09:30 | Amelie Van Impe v Oana Georgeta Simion | 7-5,6-2 |
| ITF W75 Koper | 2025/04/16 15:31 | Sapfo Sakellaridi v Oana Georgeta Simion | 6-4,7-5 |
| ITF W75 Koper | 2025/04/14 13:08 | Aurora Corvi v Oana Georgeta Simion | 2-3 |
| ITF W15 Alaminos | 2025/03/28 07:30 | Jenny Duerst v Oana Georgeta Simion | 6-1,4-6,6-3 |
| ITF W15 Alaminos | 2025/03/27 07:30 | Polina Bakhmutkina v Oana Georgeta Simion | 3-6,0-6 |