[116] Heather Watson 6-1,6-2 Ayano Shimizu [220] 2018-03-31 22:10
Stadium: Court 10 Round: 45 Ground: Hardcourt outdoor
Home History
| WTA Miami | 2018/03/20 17:05 | Beatriz Haddad Maia v Heather Watson | 7-6,6-2 |
| WTA Indian Wells | 2018/03/09 05:50 | Victoria Azarenka v Heather Watson | 6-4,6-2 |
| WTA Acapulco | 2018/02/28 00:20 | Beatriz Haddad Maia v Heather Watson | 7-5,4-6,6-1 |
| 2018 Fed Cup | 2018/02/10 14:00 | Heather Watson v Dalma Galfi | 3-6,6-1,6-4 |
| 2018 Fed Cup | 2018/02/09 14:00 | Heather Watson v Katriin Saar | 6-1,6-1 |
| 2018 Fed Cup | 2018/02/07 14:00 | Heather Watson v Francisca Jorge | 6-4,6-2 |
| WTA St. Petersburg Qual | 2018/01/27 12:45 | Heather Watson v Roberta Vinci | 3-6,4-6 |
| Australian Open Women | 2018/01/16 08:25 | Yulia Putintseva v Heather Watson | 7-5,7-6 |
Away History
| ITF Women Kofu | 2018/03/27 02:40 | Kyoka Okamura v Ayano Shimizu | 6-2,6-1 |
| ITF Women Toyota | 2018/03/15 02:00 | Eri Hozumi v Ayano Shimizu | 6-2,6-3 |
| ITF Women Toyota | 2018/03/13 01:00 | Mana Kawamura v Ayano Shimizu | 3-6,6-3,4-6 |
| ITF Women Yokohama | 2018/03/06 01:00 | Ayano Shimizu v Mai Minokoshi | 3-6,3-6 |
| ITF Women Perth | 2018/02/22 02:00 | Katy Dunne v Ayano Shimizu | 6-4,7-5 |
| ITF Women Perth | 2018/02/20 02:00 | Alicia Smith v Ayano Shimizu | 7-6,5-7,5-7 |
| ITF Women Perth | 2018/02/15 02:00 | Ayano Shimizu v Jaimee Fourlis | 3-6,3-6 |
| ITF Women Perth | 2018/02/13 02:00 | Jaqueline Adina Cristian v Ayano Shimizu | 6-3,3-6,4-6 |