| UTR Pro Blagoevgrad Women | 2023/02/07 06:00 | Dema, Viktoriia v Kostova, Elitsa | 1-6,5-7 |
| UTR Pro Blagoevgrad Women | 2023/02/03 07:30 | Kostova, Elitsa v Dema, Viktoriia | 6-3,6-4 |
| UTR Pro Tennis Series Blagoevgrad Women | 2022/12/07 06:00 | Dema, Viktoriia v Kostova, Elitsa | 2-6,3-6 |
| UTR - Série Pro - Beograd - Femmes | 2023/04/12 06:00 | Noa Krznaric v Kostova, Elitsa | 0-6,2-6 |
| UTR - Série Pro - Beograd - Femmes | 2023/04/11 07:30 | Anger, Jenifer v Kostova, Elitsa | 2-6,5-7 |
| UTR Pro Zadar - Femmes | 2023/04/02 07:30 | Darja Semenistaja v Kostova, Elitsa | 6-1,6-2 |
| UTR Pro Zadar - Femmes | 2023/04/01 14:15 | Stolmar, Rebeka v Kostova, Elitsa | 2-6,3-6 |
| UTR Pro Zadar - Femmes | 2023/03/31 07:30 | Kostova, Elitsa v Mia Chudejova | 6-4,7-6 |
| UTR Pro Zadar - Femmes | 2023/03/29 09:27 | Kostova, Elitsa v Ardidiacono, Frederica | 6-3,6-1 |
| UTR Pro Zadar - Femmes | 2023/03/28 06:00 | Kostova, Elitsa v Greta Fenyves | 6-3,6-3 |
| UTR Pro Zadar - Femmes | 2023/03/27 11:26 | Laura Svatikova v Kostova, Elitsa | 2-6,4-6 |
| UTR - Série Pro - Beograd - Femmes | 2023/04/11 09:00 | Noa Krznaric v Dema, Viktoriia | 6-7,0-6 |
| UTR - Série Pro - Beograd - Femmes | 2023/04/10 06:00 | Dema, Viktoriia v Malesevic, Tamara | 6-1,5-2 |
| ITF - W15 Antalya | 2023/03/28 09:45 | Dema, Viktoriia v Dadaciu, Sabina | 2-6,1-6 |
| ITF - W15 Antalya | 2023/03/27 12:25 | Dema, Viktoriia v Sandugash Kenzhibayeva | 7-6,6-3 |
| ITF - W15 Antalya | 2023/03/26 09:30 | Natsvlishvili, Nino v Dema, Viktoriia | 6-7,2-6 |
| ITF - W15 Antalya | 2023/03/22 11:35 | Andrea Obradovic v Dema, Viktoriia | 1-6,7-6,6-1 |
| ITF - W15 Antalya | 2023/03/21 08:15 | Dema, Viktoriia v Joulia Cristiana Cirstea | 7-6,6-4 |
| ITF - W15 Antalya | 2023/03/20 10:05 | Dema, Viktoriia v Ada Piestrzynska | 6-0,6-2 |