| WTA Washington | 07/31 18:00 | 25 | [17] Naomi Osaka v Bernarda Pera [95] | 6-2,7-6 | |
| Wimbledon - Kobiety | 07/07 14:30 | 25 | [10] Angelique Kerber v Naomi Osaka [18] | 6-2,6-4 | |
| Wimbledon - Kobiety | 07/05 10:30 | 24 | [122] Katie Boulter v Naomi Osaka [18] | 3-6,4-6 | |
| Wimbledon - Kobiety | 07/03 16:25 | 23 | [61] Monica Niculescu v Naomi Osaka [18] | 4-6,1-6 | |
| WTA Birmingham | 06/20 13:10 | 26 | [18] Naomi Osaka v Dalila Jakupovic [113] | Retired | |
| WTA Birmingham | 06/18 14:40 | 25 | [139] Katie Boulter v Naomi Osaka [18] | 1-6,2-6 | |
| WTA Nottingham | 06/16 13:10 | 28 | [17] Ashleigh Barty v Naomi Osaka [18] | 6-3,6-4 | |
| WTA Nottingham | 06/15 14:25 | 27 | [18] Naomi Osaka v Mihaela Buzarnescu [30] | 6-4,6-1 | |
| WTA Nottingham | 06/13 15:35 | 26 | [18] Naomi Osaka v Denisa Allertova [101] | 6-3,6-2 | |
| WTA Nottingham | 06/11 11:00 | 25 | [18] Naomi Osaka v Sachia Vickery [82] | 3-6,6-1,6-2 | |
| French Open - Kobiety | 06/01 09:00 | 25 | [13] Madison Keys v Naomi Osaka [20] | 6-1,7-6 | |
| French Open - Kobiety | 05/30 09:00 | 24 | [51] Zarina Diyas v Naomi Osaka [20] | 4-6,5-7 | |
| French Open - Kobiety | 05/28 09:00 | 23 | [92] Sofia Kenin v Naomi Osaka [21] | 2-6,5-7 | |
| WTA Rzym | 05/16 09:00 | 25 | [1] Simona Halep v Naomi Osaka [21] | 6-1,6-0 | |
| WTA Rzym | 05/14 12:10 | 24 | [84] Victoria Azarenka v Naomi Osaka [21] | 0-6,3-6 | |
| WTA Madryt | 05/06 13:35 | 24 | [31] Shuai Zhang v Naomi Osaka [21] | 6-1,7-5 | |
| 2018 Fed Cup | 04/22 03:00 | 27 | [22] Naomi Osaka v Johanna Konta [23] | 3-6,3-6 | |
| 2018 Fed Cup | 04/21 04:00 | 27 | [22] Naomi Osaka v Heather Watson [77] | 6-2,6-3 | |
| WTA Charleston | 04/05 15:00 | 26 | [13] Julia Goerges v Naomi Osaka [21] | 7-6,6-3 | |
| WTA Charleston | 04/04 15:45 | 25 | [74] Laura Siegemund v Naomi Osaka [21] | 3-6,6-7 | |
| WTA Charleston | 04/02 17:30 | 24 | [82] Jennifer Brady v Naomi Osaka [21] | 4-6,4-6 | |
| WTA Miami | 03/23 15:00 | 24 | [22] Naomi Osaka v Elina Svitolina [4] | 4-6,2-6 | |
| WTA Miami | 03/21 20:35 | 23 | [491] Serena Williams v Naomi Osaka [22] | 3-6,2-6 | |
| WTA Indian Wells | 03/18 18:00 | 29 | Naomi Osaka v Daria Kasatkina | 6-3,6-2 | |
| WTA Indian Wells | 03/17 05:10 | 28 | Simona Halep v Naomi Osaka | 3-6,0-6 | |
| WTA Indian Wells | 03/15 03:40 | 27 | Naomi Osaka v Karolina Pliskova | 6-2,6-3 | |
| WTA Indian Wells | 03/13 21:10 | 26 | Naomi Osaka v Maria Sakkari | 6-1,5-7,6-1 | |
| WTA Indian Wells | 03/12 05:00 | 25 | Sachia Vickery v Naomi Osaka | 3-6,3-6 | |
| WTA Indian Wells | 03/09 20:35 | 24 | Naomi Osaka v Agnieszka Radwanska | 6-3,6-2 | |
| WTA Indian Wells | 03/08 03:30 | 23 | Naomi Osaka v Maria Sharapova | 6-4,6-4 |
Wikipedia - Naomi Ōsaka
Naomi Ōsaka (jap. 大坂 なおみ Ōsaka Naomi; ur. 16 października 1997 w Osace) – japońska tenisistka pochodzenia haitańskiego, zwyciężczyni US Open 2018 i 2020 oraz Australian Open 2019 i 2021, liderka rankingu WTA od 28 stycznia do 23 czerwca i od 12 sierpnia do 8 września 2019. Została uhonorowana tytułem Barbie Shero, jako kobieta wzór dla dziewcząt.