[122] Katie Boulter 3-6,4-6 Naomi Osaka [18] 2018-06-05 10:30
Stadium: Court 2 Round: 24 Ground: Grass
Home History
| French Open Women Qual | 2018/05/23 08:00 | Mariana Duque Marino v Katie Boulter | 7-6,7-5 |
| ITF Women Fukuoka | 2018/05/13 01:00 | Katie Boulter v Ksenia Lykina | 5-7,6-4,6-2 |
| ITF Women Fukuoka | 2018/05/12 04:20 | Katie Boulter v Momoko Kobori | 6-1,6-4 |
| ITF Women Fukuoka | 2018/05/11 01:00 | Naomi Broady v Katie Boulter | 4-6,6-3,2-6 |
| ITF Women Fukuoka | 2018/05/10 01:00 | Tammi Patterson v Katie Boulter | 3-6,1-6 |
| ITF Women Fukuoka | 2018/05/08 05:15 | Yuki Naito v Katie Boulter | 6-4,4-6,4-6 |
| ITF Women Gifu | 2018/05/02 01:00 | Harriet Dart v Katie Boulter | 6-2,7-5 |
| ITF Women Obidos Qual | 2018/04/23 11:35 | Urszula Radwanska v Katie Boulter | 6-4,3-6,3-6 |
Away History
| 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 |
| French Open Women | 2018/05/28 09:00 | Sofia Kenin v Naomi Osaka | 2-6,5-7 |
| WTA Rome | 2018/05/16 09:00 | Simona Halep v Naomi Osaka | 6-1,6-0 |
| WTA Rome | 2018/05/14 12:10 | Victoria Azarenka v Naomi Osaka | 0-6,3-6 |
| WTA Madrid | 2018/05/06 13:35 | Shuai Zhang v Naomi Osaka | 6-1,7-5 |
| 2018 Fed Cup | 2018/04/22 03:00 | Naomi Osaka v Johanna Konta | 3-6,3-6 |
| 2018 Fed Cup | 2018/04/21 04:00 | Naomi Osaka v Heather Watson | 6-2,6-3 |