[4] Naomi Osaka 4-6,6-3,6-4 Anastasija Sevastova [12] 2019-01-21 01:00
Stadium: Rod Laver Arena Round: 26 Ground: Hardcourt outdoor
Head to Head
| WTA Brisbane | 2019/01/03 05:30 | Anastasija Sevastova v Naomi Osaka | 6-3,0-6,4-6 |
| WTA Beijing | 2018/10/06 06:30 | Anastasija Sevastova v Naomi Osaka | 6-4,6-4 |
| WTA Doha | 2018/02/14 12:30 | Anastasija Sevastova v Naomi Osaka | 6-4,6-1 |
| WTA Toronto | 2017/08/09 18:45 | Naomi Osaka v Anastasija Sevastova | 6-3,6-4 |
Home History
| Australian Open Women | 2019/01/19 00:00 | Naomi Osaka v Su-Wei Hsieh | 5-7,6-4,6-1 |
| Australian Open Women | 2019/01/17 04:15 | Naomi Osaka v Tamara Zidansek | 6-2,6-4 |
| Australian Open Women | 2019/01/15 10:30 | Naomi Osaka v Magda Linette | 6-4,6-2 |
| WTA Brisbane | 2019/01/05 03:00 | Lesia Tsurenko v Naomi Osaka | 6-2,6-4 |
| WTA Brisbane | 2019/01/03 05:30 | Anastasija Sevastova v Naomi Osaka | 6-3,0-6,4-6 |
| WTA Brisbane | 2019/01/01 09:00 | Destanee Aiava v Naomi Osaka | 3-6,2-6 |
| WTA Finals | 2018/10/24 11:30 | Angelique Kerber v Naomi Osaka | 6-4,5-7,6-4 |
| WTA Finals | 2018/10/22 11:30 | Naomi Osaka v Sloane Stephens | 5-7,6-4,1-6 |
Away History
| Australian Open Women | 2019/01/19 02:00 | Qiang Wang v Anastasija Sevastova | 3-6,3-6 |
| Australian Open Women | 2019/01/17 00:00 | Bianca Andreescu v Anastasija Sevastova | 3-6,6-3,2-6 |
| Australian Open Women | 2019/01/15 02:55 | Mona Barthel v Anastasija Sevastova | 3-6,1-6 |
| WTA Sydney | 2019/01/07 08:40 | Timea Bacsinszky v Anastasija Sevastova | 6-7,6-4,6-4 |
| WTA Brisbane | 2019/01/03 05:30 | Anastasija Sevastova v Naomi Osaka | 6-3,0-6,4-6 |
| WTA Brisbane | 2019/01/02 01:00 | Anastasija Sevastova v Harriet Dart | 6-2,6-0 |
| WTA Brisbane | 2019/01/01 03:45 | Anastasija Sevastova v Daria Saville | 6-3,6-3 |
| Czech Republic Extraliga Women | 2018/12/17 09:00 | Kristyna Pliskova v Anastasija Sevastova | 1-6,4-6 |