Stadium: Court 4 Round: 54 Ground: Clay
| ITF W100 Contrexéville | 2021/07/04 09:05 | Mariia Kostiuk v Tina Nadine Smith | 0-6,0-6 |
| ITF W25 Verbier | 2021/08/22 09:10 | Matilde Paoletti v Mariia Kostiuk | 6-4,6-0 |
| ITF W25 Les Contamines | 2021/07/18 12:55 | Pauline Wuarin v Mariia Kostiuk | 6-2,6-2 |
| ITF W100 Contrexéville | 2021/07/04 09:05 | Mariia Kostiuk v Tina Nadine Smith | 0-6,0-6 |
| ITF W60 Montpellier | 2021/06/27 15:10 | Mariia Kostiuk v Camilla Rosatello | 0-6,0-6 |
| UTR Pro Tennis Series Barcelona - naised | 2021/06/13 09:30 | Mariia Kostiuk v Eleanor Baglow | 1-6,2-6 |
| UTR Pro Tennis Series Barcelona - naised | 2021/06/10 08:00 | Mariia Kostiuk v Romy Kolzer | 0-6,1-6 |
| UTR Pro Tennis Series Barcelona - naised | 2021/06/09 12:00 | Mariia Kostiuk v Valentyna Ivakhnenko | 1-6,1-5 |
| ITF W25 Madrid | 2021/06/06 09:00 | Mariia Kostiuk v Maria Garcia Cid | 1-6,1-6 |
| ITF W25 Verbier | 2021/08/26 15:30 | Sebastianna Scilipoti v Tina Nadine Smith | 7-6,6-1 |
| ITF W25 Verbier | 2021/08/24 13:35 | Tina Nadine Smith v Bianca Turati | 2-6,6-2,6-2 |
| ITF W25 Verbier | 2021/08/23 11:45 | Tina Nadine Smith v Amandine Monnot | 7-5,7-6 |
| ITF W25 Verbier | 2021/08/22 11:35 | Tina Nadine Smith v Elisa Vigano | 6-4,6-1 |
| ITF W60 San Bartolomé De Tirajana - kval | 2021/08/15 15:35 | Francisca Jorge v Tina Nadine Smith | 6-3,7-5 |
| ITF W15 Kairo | 2021/08/08 08:00 | Tina Nadine Smith v Diletta Cherubini | 6-0,6-2 |
| ITF W15 Kairo | 2021/08/07 08:00 | Sandra Samir v Tina Nadine Smith | 6-1,6-7,1-6 |
| ITF W15 Kairo | 2021/08/06 08:00 | Lamis Alhussein Abdel Aziz v Tina Nadine Smith | 5-7,2-6 |