| WTA - Washington | 08/03 00:35 | 26 | [17] Naomi Osaka v Magda Linette [62] | 2-6,6-3,3-6 | |
| WTA - Washington | 07/31 18:00 | 25 | [17] Naomi Osaka v Bernarda Pera [95] | 6-2,7-6 | |
| Wimbledon - ženy | 07/07 14:30 | 25 | [10] Angelique Kerber v Naomi Osaka [18] | 6-2,6-4 | |
| Wimbledon - ženy | 07/05 10:30 | 24 | [122] Katie Boulter v Naomi Osaka [18] | 3-6,4-6 | |
| Wimbledon - ženy | 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 - ženy | 06/01 09:00 | 25 | [13] Madison Keys v Naomi Osaka [20] | 6-1,7-6 | |
| French Open - ženy | 05/30 09:00 | 24 | [51] Zarina Diyas v Naomi Osaka [20] | 4-6,5-7 | |
| French Open - ženy | 05/28 09:00 | 23 | [92] Sofia Kenin v Naomi Osaka [21] | 2-6,5-7 | |
| WTA - Rím | 05/16 09:00 | 25 | [1] Simona Halep v Naomi Osaka [21] | 6-1,6-0 | |
| WTA - Rím | 05/14 12:10 | 24 | [84] Victoria Azarenka v Naomi Osaka [21] | 0-6,3-6 | |
| WTA - Madrid | 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 |
Wikipedia - Naomi Ósaková
Naomi Ósaková (jap. 大坂 なおみ – Ósaka Naomi; * 16. október 1997, Osaka, Japonsko) je japonská profesionálna tenistka, víťazka grandslamového turnaja US Open 2018 po tom, čo vo finále dvojhry žien zvíťazila nad Serenou Williamsovou. Žiadnemu tenistovi ani tenistke japonskej národnosti sa dovtedy nepodarilo získať titul z grandslamového turnaja. Ósakovej najlepšie umiestnenie v rebríčku WTA bolo 1. miesto.