| Wimbledon Women | 2021/06/24 10:00 | Elitsa Kostova v Xinyu Wang | 2-6,1-6 |
| Wimbledon Women | 2021/06/23 10:00 | Elitsa Kostova v Destanee Aiava | 6-4,7-5 |
| ITF W25 Madrid | 2021/06/11 07:15 | Robin Anderson v Elitsa Kostova | 7-6,6-2 |
| ITF W25 Madrid | 2021/06/10 10:35 | Yvonne Cavalle-Reimers v Elitsa Kostova | 6-3,2-6,5-7 |
| ITF W25 Madrid | 2021/06/09 09:05 | Ganna Poznikhirenko v Elitsa Kostova | 3-6,3-6 |
| French Open Women | 2021/05/26 08:30 | Elitsa Kostova v Ekaterine Gorgodze | 6-7,3-6 |
| French Open Women | 2021/05/24 08:30 | Salma Djoubri v Elitsa Kostova | 3-6,2-6 |
| UTR Pro Pazardzhik Women | 2021/05/16 08:00 | Elitsa Kostova v Darja Semenistaja | 6-1,6-3 |
| ITF W25 Lisbon | 2021/07/04 13:30 | Lucia Cortez Llorca v Nina Ugrelidze | 6-2,6-0 |
| ITF W25 Porto | 2021/06/21 17:00 | Melanie Stokke v Nina Ugrelidze | 5-7,6-3,10-5 |
| ITF W25 Porto | 2021/06/20 12:00 | Nina Ugrelidze v Sashi Kempster | 7-6,6-3 |
| ITF W25 Madrid | 2021/06/13 12:00 | Nina Ugrelidze v Cristina Dinu | 2-6,1-6 |
| ITF W25 Madrid | 2021/06/06 09:30 | Isabel A Gallego v Nina Ugrelidze | 6-0,7-6 |
| ITF W25 SM de Montbui | 2021/05/23 13:00 | Nina Ugrelidze v Ariadna Briones Ginesta | 4-6,6-2,6-10 |
| ITF W15 Tbilisi | 2021/05/17 06:00 | Lizi Dolidze v Nina Ugrelidze | 6-3,6-2 |
| ITF W15 Antalya | 2021/03/28 06:30 | Vanja Gudelj v Nina Ugrelidze | 6-1,4-6,10-6 |