[110] Heather Watson 5-7,6-2,6-0 Haruka Kaji [315] 2019-05-15 01:00
Stadium: Court 2 Round: 25 Ground: Grass
Home History
| ITF W60 Fukuoka | 2019/05/12 02:00 | Zarina Diyas v Heather Watson | 6-7,6-7 |
| ITF W60 Fukuoka | 2019/05/10 02:00 | En Shuo Liang v Heather Watson | 2-6,2-6 |
| ITF W60 Fukuoka | 2019/05/09 02:00 | Leonie Kung v Heather Watson | 2-6,4-6 |
| ITF W60 Fukuoka | 2019/05/08 02:00 | Himeno Sakatsume v Heather Watson | 2-6,1-6 |
| ITF W80 Gifu | 2019/05/01 01:00 | Akiko Omae v Heather Watson | 6-4,6-4 |
| WTA Miami | 2019/03/18 19:55 | Heather Watson v Madison Brengle | 7-6,3-6,4-6 |
| WTA Guadalajara | 2019/03/12 21:00 | Heather Watson v Nao Hibino | 4-6,1-6 |
| WTA Indian Wells | 2019/03/04 21:40 | Sara Errani v Heather Watson | 6-2,6-7,6-4 |
Away History
| ITF W60 Fukuoka | 2019/05/07 02:15 | Mana Ayukawa v Haruka Kaji | 6-4,3-6,6-2 |
| ITF W80 Gifu | 2019/05/01 02:00 | Haruka Kaji v Mayo Hibi | 6-7,1-6 |
| ITF W80 Gifu | 2019/04/29 06:05 | Xiaodi You v Haruka Kaji | 4-6,6-7 |
| ITF W80 Gifu | 2019/04/29 01:00 | Olivia Tjandramulia v Haruka Kaji | 4-6,1-6 |
| ITF W25 Hong Kong | 2019/04/11 02:00 | Haruka Kaji v Aldila Sutjiadi | 6-7,6-7 |
| ITF W25 Hong Kong | 2019/04/10 03:40 | Haruka Kaji v Eudice Chong | 6-3,3-6,6-4 |
| ITF W25 Kashiwa | 2019/04/05 03:55 | Daria Snigur v Haruka Kaji | 6-4,6-1 |
| ITF W25 Kashiwa | 2019/04/02 01:55 | Haruka Kaji v Ya-Hsuan Lee | 6-3,6-1 |