[119] Marta Kostyuk 6-7,6-2,6-3 Heather Watson [91] 2018-12-28 01:40
Stadium: Show Court 2 Round: 45 Ground: Hardcourt outdoor
Home History
| WTA Tashkent | 2018/09/25 05:00 | Marta Kostyuk v Arantxa Rus | 4-6,3-6 |
| US Open Women | 2018/08/23 16:15 | Marie Bouzkova v Marta Kostyuk | 6-1,7-5 |
| US Open Women | 2018/08/21 15:00 | Valentyna Ivakhnenko v Marta Kostyuk | 6-4,6-7,6-7 |
| ITF Women Vancouver | 2018/08/15 17:00 | Marta Kostyuk v Ysaline Bonaventure | 4-6,7-5,0-6 |
| Wimbledon Women Qual | 2018/06/28 13:00 | Sara Sorribes Tormo v Marta Kostyuk | 7-5,7-6 |
| Wimbledon Women Qual | 2018/06/27 14:05 | Kristie Ahn v Marta Kostyuk | 7-6,3-6,7-9 |
| Wimbledon Women Qual | 2018/06/26 14:05 | Lauren Davis v Marta Kostyuk | 3-6,3-6 |
| WTA Mallorca | 2018/06/19 09:00 | Marta Kostyuk v Lucie Safarova | 4-6,5-7 |
Away History
| WTA Houston | 2018/11/16 18:55 | Sofya Zhuk v Heather Watson | 7-5,6-4 |
| WTA Houston | 2018/11/14 20:35 | Reka-Luca Jani v Heather Watson | 4-6,1-6 |
| WTA Houston | 2018/11/13 16:00 | Jamie Loeb v Heather Watson | 7-5,1-6,1-6 |
| ITF Women Las Vegas | 2018/11/08 18:00 | Danielle Lao v Heather Watson | 5-7,6-1,6-1 |
| ITF Women Las Vegas | 2018/11/07 20:40 | Ulrikke Eikeri v Heather Watson | 3-6,2-6 |
| WTA Luxembourg | 2018/10/13 16:30 | Heather Watson v Karolina Muchova | 2-6,6-2,4-6 |
| WTA Hong Kong | 2018/10/06 03:25 | Heather Watson v Jia-Jing Lu | 3-6,6-3,3-6 |
| WTA Beijing | 2018/09/29 07:00 | Heather Watson v Zarina Diyas | 0-6,3-6 |