Stadium: Ciudad de Don Benito Round: 25 Ground: Synthetic outdoor
| ITF W15 Don Benito | 2021/07/19 15:00 | Marina Benito v Tamara Kostic | 3-6,3-6 |
| ITF W15 Don Benito | 2021/07/18 17:00 | Tamara Kostic v Carmen Garri Murcia | 6-3,6-1 |
| ITF W15 Don Benito | 2021/07/18 07:15 | Tamara Kostic v Iman Khan | 7-6,6-7,10-8 |
| Austrian Tennis Championship Women | 2020/07/02 08:00 | Daniela Glanzer v Tamara Kostic | 7-6,6-1 |
| Austrian Tennis Championship Women | 2020/07/01 08:00 | Tamara Kostic v Tijana Zlatanovic | 4-6,6-4,6-4 |
| ITF W15 Don Benito | 2021/07/19 07:00 | Claudia Martinez de Velasco v Angela Juarez Blanco | 6-1,6-3 |
| ITF W25 Madrid | 2021/06/13 12:00 | Lidia Moreno Arias v Claudia Martinez de Velasco | 6-2,3-6,10-6 |
| ITF W15 Madrid | 2020/12/06 13:00 | Claudia Martinez de Velasco v Chiara Girelli | 3-6,1-6 |