[68] Heather Watson 3-6,6-7 Marcela Zacarias [285] 2021-04-17 10:30
Stadium: National Tennis Centre Round: 7 Ground: Hardcourt indoor
Home History
| Billie Jean King Cup | 2021/04/16 14:50 | Heather Watson v Giuliana Olmos | 7-5,6-1 |
| WTA Miami | 2021/03/24 21:55 | Heather Watson v Nina Stojanovic | 4-6,1-6 |
| WTA Monterrey | 2021/03/16 18:00 | Harriet Dart v Heather Watson | 6-4,7-6 |
| Australian Open Women | 2021/02/11 03:30 | Anett Kontaveit v Heather Watson | 6-7,6-4,6-2 |
| Australian Open Women | 2021/02/09 02:10 | Kristyna Pliskova v Heather Watson | 6-7,6-7 |
| WTA Grampians Trophy | 2021/02/03 04:45 | Heather Watson v Veronika Kudermetova | 2-6,2-6 |
| WTA Abu Dhabi | 2021/01/09 08:35 | Ekaterina Alexandrova v Heather Watson | 7-5,6-7,6-3 |
| WTA Abu Dhabi | 2021/01/07 14:35 | Heather Watson v Jodie Anna Burrage | 4-6,6-2,7-5 |
Away History
| Billie Jean King Cup | 2021/04/16 12:45 | Katie Boulter v Marcela Zacarias | 7-5,6-0 |
| WTA Monterrey | 2021/03/13 17:30 | Marcela Zacarias v Mayar Sherif | 3-6,6-7 |
| WTA Guadalajara | 2021/03/07 20:00 | Giuliana Olmos v Marcela Zacarias | 7-5,4-6,7-6 |
| WTA Guadalajara | 2021/03/06 21:45 | Marcela Zacarias v Sachia Vickery | 6-2,6-1 |
| ITF W25 Boca Raton | 2021/02/23 17:25 | Marcela Zacarias v Katie Volynets | 6-3,5-7,6-10 |
| ITF W25 Boca Raton | 2021/02/22 15:00 | Marcela Zacarias v Peyton Stearns | 6-1,6-4 |
| ITF W25 Orlando | 2021/02/15 18:30 | Marcela Zacarias v Sophia Whittle | 6-4,5-7,9-11 |
| WTA Prague | 2020/08/29 08:00 | Marcela Zacarias v Olga Danilovic | 3-6,1-6 |