[122] Katie Boulter 3-6,4-6 Naomi Osaka [18] 2018-07-05 10:30
Stadium: Court 2 Round: 24 Ground: Grass
Head to Head
| WTA Birmingham | 2018/06/18 14:40 | Katie Boulter v Naomi Osaka | 1-6,2-6 |
Home History
| Wimbledon Women | 2018/07/03 15:15 | Katie Boulter v Veronica Cepede Royg | 6-4,5-7,6-4 |
| ITF Women Southsea | 2018/06/29 10:00 | Katie Boulter v Kirsten Flipkens | 4-6,7-5,3-6 |
| ITF Women Southsea | 2018/06/28 11:25 | Jennifer Brady v Katie Boulter | 3-6,3-6 |
| ITF Women Southsea | 2018/06/27 13:30 | Anna Karolina Schmiedlova v Katie Boulter | 2-6,0-6 |
| ITF Women Southsea | 2018/06/26 16:35 | Katie Boulter v Ekaterina Alexandrova | 6-4,6-2 |
| WTA Birmingham | 2018/06/18 14:40 | Katie Boulter v Naomi Osaka | 1-6,2-6 |
| WTA Nottingham | 2018/06/15 11:40 | Ashleigh Barty v Katie Boulter | 6-0,6-2 |
| WTA Nottingham | 2018/06/14 12:00 | Katie Boulter v Samantha Stosur | 7-6,6-1 |
Away History
| Wimbledon Women | 2018/07/03 16:25 | Monica Niculescu v Naomi Osaka | 4-6,1-6 |
| WTA Birmingham | 2018/06/18 14:40 | Katie Boulter v Naomi Osaka | 1-6,2-6 |
| WTA Nottingham | 2018/06/16 13:10 | Ashleigh Barty v Naomi Osaka | 6-3,6-4 |
| WTA Nottingham | 2018/06/15 14:25 | Naomi Osaka v Mihaela Buzarnescu | 6-4,6-1 |
| WTA Nottingham | 2018/06/13 15:35 | Naomi Osaka v Denisa Allertova | 6-3,6-2 |
| WTA Nottingham | 2018/06/11 11:00 | Naomi Osaka v Sachia Vickery | 3-6,6-1,6-2 |
| French Open Women | 2018/06/01 09:00 | Madison Keys v Naomi Osaka | 6-1,7-6 |
| French Open Women | 2018/05/30 09:00 | Zarina Diyas v Naomi Osaka | 4-6,5-7 |