Stadium: Pista 3 Round: 25 Ground: Clay
| ITF W25 Lagos | 2021/10/14 12:10 | Isabella Shinikova v Diana Marcinkevica | 6-3,7-5 |
| ITF W25 Lagos | 2021/10/13 11:25 | Diana Marcinkevica v Weronika Falkowska | 7-6,6-2 |
| ITF W25 Loule | 2021/10/05 13:10 | Jessika Ponchet v Diana Marcinkevica | 7-5,6-3 |
| ITF W25 Lisbon | 2021/09/27 14:00 | Diana Marcinkevica v Yvonne Cavalle-Reimers | 3-6,4-6 |
| ITF W80 Wiesbaden | 2021/09/20 15:00 | Lina Gjorcheska v Diana Marcinkevica | 6-4,6-1 |
| ITF W80 Wiesbaden | 2021/09/20 08:00 | Mara Guth v Diana Marcinkevica | 6-7,2-6 |
| ITF W60 Montreux | 2021/09/08 09:15 | Diana Marcinkevica v Susan Bandecchi | 4-6,1-6 |
| ITF W60 Collonge-Bellerive | 2021/09/01 10:40 | Diana Marcinkevica v Estelle Cascino | 4-6,4-6 |
| ITF W15 Sozopol | 2021/10/16 09:30 | Martha Matoula v Yeon Woo Ku | 2-6,6-3,6-3 |
| ITF W15 Sozopol | 2021/10/15 08:30 | Oceane Babel v Yeon Woo Ku | 1-6,5-7 |
| ITF W15 Sozopol | 2021/10/14 13:35 | Noel Saidenova v Yeon Woo Ku | 1-6,4-6 |
| ITF W15 Sozopol | 2021/10/10 07:00 | Yeon Woo Ku v Julia Terziyska | 6-4,6-2 |
| ITF W15 Sozopol | 2021/10/09 07:00 | Anna Brogan v Yeon Woo Ku | 1-6,4-6 |
| ITF W15 Sozopol | 2021/10/08 07:00 | Yeon Woo Ku v Sofia Nami Samavati | 6-0,6-2 |
| ITF W15 Sozopol | 2021/10/07 08:00 | Yeon Woo Ku v Mihaela Tsoneva | 6-2,6-1 |
| ITF W15 Sozopol | 2021/10/06 08:00 | Valentina Ryser v Yeon Woo Ku | 3-6,2-6 |