[85] Marta Kostyuk 6-3,7-5 Daria Kasatkina [37] 2021-04-21 10:00
Stadium: Center Court Round: 26 Ground: Clay
Head to Head
| US Open Women | 2020/08/31 19:20 | Marta Kostyuk v Daria Kasatkina | 6-1,6-2 |
Home History
| WTA Istanbul | 2021/04/20 08:00 | Kamilla Rakhimova v Marta Kostyuk | 4-6,3-6 |
| Billie Jean King Cup | 2021/04/16 09:45 | Marta Kostyuk v Yuki Naito | 6-3,6-3 |
| WTA Miami | 2021/03/24 22:15 | Tsvetana Pironkova v Marta Kostyuk | 7-6,3-6,6-3 |
| Australian Open Women | 2021/02/08 04:15 | Veronika Kudermetova v Marta Kostyuk | 6-2,7-6 |
| WTA Grampians Trophy | 2021/02/05 02:05 | Jennifer Brady v Marta Kostyuk | 6-1,6-4 |
| WTA Grampians Trophy | 2021/02/02 23:30 | Gabriela Dabrowski v Marta Kostyuk | 0-6,3-6 |
| WTA Abu Dhabi | 2021/01/12 09:15 | Marta Kostyuk v Veronika Kudermetova | 6-7,4-6 |
| WTA Abu Dhabi | 2021/01/11 10:05 | Marta Kostyuk v Sara Sorribes Tormo | 0-6,6-1,6-4 |
Away History
| WTA Istanbul | 2021/04/20 08:00 | Tereza Mrdeza v Daria Kasatkina | 1-6,0-6 |
| WTA St. Petersburg | 2021/03/20 13:15 | Svetlana Kuznetsova v Daria Kasatkina | 6-1,0-6,2-6 |
| WTA St. Petersburg | 2021/03/19 15:50 | Daria Kasatkina v Veronika Kudermetova | 1-6,6-1,6-2 |
| WTA St. Petersburg | 2021/03/18 11:50 | Daria Kasatkina v Aliaksandra Sasnovich | 5-7,6-3,7-6 |
| WTA St. Petersburg | 2021/03/16 12:00 | Daria Kasatkina v Clara Tauson | 6-4,7-6 |
| WTA Dubai | 2021/03/07 12:00 | Alize Cornet v Daria Kasatkina | 6-4,3-6,6-1 |
| WTA Melbourne | 2021/02/19 04:00 | Daria Kasatkina v Marie Bouzkova | 4-6,6-2,6-2 |
| WTA Melbourne | 2021/02/18 02:00 | Danielle Rose Collins v Daria Kasatkina | 2-6,7-6,1-6 |