Naomi Osaka has won two Australian Open women’s singles titles, in 2019 and 2021. She is undefeated in Melbourne finals, owns a 28-7 tournament match record through 2026 and has won all four of her Grand Slam singles titles on hard courts.
Osaka’s first Melbourne championship took her to world No.1. Her second included a semifinal victory over Serena Williams and confirmed her status as one of the leading hard-court players of her generation.
Naomi Osaka’s Australian Open Record at a Glance
| Record | Total |
|---|---|
| Women’s singles titles | 2 |
| Titles won | 2019, 2021 |
| Finals | 2 |
| Finals record | 2-0 |
| Match record through 2026 | 28-7 |
| Main-draw appearances | 10 |
| Best doubles result | First round, 2017 |
The 28-7 figure is her official Australian Open win-loss record through the 2026 event. A walkover does not count as a match played, which matters because Osaka withdrew before her scheduled third-round match in 2026.
Osaka’s Australian Open Results by Year
| Year | Result | Player Who Ended Her Run |
|---|---|---|
| 2016 | Third round | Victoria Azarenka |
| 2017 | Second round | Johanna Konta |
| 2018 | Fourth round | Simona Halep |
| 2019 | Champion | None |
| 2020 | Third round | Coco Gauff |
| 2021 | Champion | None |
| 2022 | Third round | Amanda Anisimova |
| 2023 | Did not play | Not applicable |
| 2024 | First round | Caroline Garcia |
| 2025 | Third round | Belinda Bencic, retirement |
| 2026 | Third round withdrawal | Maddison Inglis advanced by walkover |
Osaka’s progress was steady during her first three appearances. She reached the third round on her Grand Slam debut in 2016, the second round in 2017 and the fourth round in 2018 before winning the title in 2019.
The 2019 Australian Open Title
Osaka arrived in Melbourne as the reigning US Open champion after winning her first major in New York in 2018. She was seeded fourth and faced a draw that tested both her power and her ability to recover under pressure.
After straight-sets wins in the first two rounds, Osaka needed three sets against Hsieh Su-wei and Anastasija Sevastova. She then defeated Elina Svitolina in the quarterfinal and Karolina Pliskova in a high-quality three-set semifinal.
The 2019 Final Against Petra Kvitova
The final carried two major prizes. Both Osaka and Petra Kvitova were competing for the title and the world No.1 ranking.
Osaka won the first set in a tiebreak and held three consecutive championship points on Kvitova’s serve in the second. Kvitova saved all three, won four straight games and forced a deciding set.
Rather than allowing that missed opportunity to decide the match, Osaka recovered and broke early in the third. She completed a 7-6(2), 5-7, 6-4 victory to win consecutive Grand Slam titles.
The result made Osaka the first Asian player, man or woman, to reach world No.1 in singles. The guide to how the tennis world ranking works explains why a Grand Slam title can create such a large movement in the standings.
The 2021 Australian Open Title
The 2021 Australian Open was held in February after pandemic-related changes to the normal schedule. Osaka entered as the reigning US Open champion and won the tournament for the second time without facing a final-set defeat.
Her most dangerous moment came in the fourth round against Garbine Muguruza. Osaka saved two match points before recovering to win 4-6, 6-4, 7-5.
She then defeated Hsieh Su-wei in the quarterfinal and Serena Williams 6-3, 6-4 in the semifinal. It was Osaka’s third victory over Williams in four meetings and her first Australian Open matchup with the seven-time champion.
The 2021 Final Against Jennifer Brady
Osaka faced Jennifer Brady, whom she had beaten in a demanding three-set semifinal at the 2020 US Open. The Melbourne final was shorter and more controlled.
Osaka won 6-4, 6-3 to claim her fourth Grand Slam singles title. She improved to 4-0 in major quarterfinals, 4-0 in major semifinals and 4-0 in major finals at that stage of her career.
Her two US Open victories form the other half of that hard-court major record. The US Open history and records guide provides more context for the New York tournament.
Why Osaka’s Game Fits the Australian Open
Osaka’s first serve and aggressive baseline game are particularly effective on hard courts. She can take control with the first strike after the serve, while her two-handed backhand allows her to redirect pace without needing a long preparation.
Her return position and willingness to attack second serves can place opponents under immediate pressure. When she controls her errors, that combination makes it difficult for a rival to settle into neutral rallies.
Hard courts vary in speed and bounce, so success in Melbourne is not identical to success in New York. This comparison of tennis court surfaces explains why weather, ball choice and surface preparation also affect playing conditions.
Osaka has also produced some of her best tennis under the Rod Laver Arena roof. Controlled conditions reduce the effects of wind and rain, although temperature and the transition between outdoor and indoor-like play can still influence the match.
Her 2020 Title Defense
Osaka returned in 2020 as defending champion and reached the third round. Coco Gauff, then 15, defeated her 6-3, 6-4 in one of the tournament’s most notable early-round results.
The loss ended Osaka’s attempt to become the first woman since Victoria Azarenka in 2013 to defend the Australian Open title. It also showed how quickly a major draw can change, even for a leading seed.
The 2022 Loss to Amanda Anisimova
Osaka won her first two rounds in 2022 and faced Amanda Anisimova in the third. She held two match points, but Anisimova saved both and won 4-6, 6-3, 7-6[10-5].
It was Osaka’s first Australian Open loss after winning the opening set. The deciding 10-point tiebreak used the Australian Open’s final-set rule, which the tournament introduced in 2019. The four Grand Slams jointly standardized that format later in 2022.
Her Return in 2024
Osaka missed the 2023 season while becoming a mother and returned to Grand Slam competition at the 2024 Australian Open. Her first-round opponent was 16th seed Caroline Garcia.
Garcia won 6-4, 7-6(2), ending Osaka’s comeback tournament in the opening round. Osaka’s level was competitive, but the draw offered no gradual introduction after her long absence.
The 2025 Retirement
In 2025, Osaka reversed the previous year’s result by defeating Garcia in the first round. She then came from a set down to beat seeded Karolina Muchova.
An abdominal injury affected her third-round match against Belinda Bencic. Bencic won the opening set 7-6(3), after which Osaka retired.
The result counts as a match loss because play had begun. That differs from a withdrawal before the first point, which is recorded as a walkover rather than a completed match.
What Happened at the 2026 Australian Open?
Osaka returned in 2026 as a seeded player and won three-set matches against Antonia Ruzic and Sorana Cirstea. The second victory improved her record in three-set matches at Melbourne Park to 10-1 at that moment.
She was scheduled to face Australian qualifier Maddison Inglis in the third round but withdrew before the match because of a physical issue. Inglis advanced by walkover, so no match was added to Osaka’s win-loss record.
Osaka finished the event with two match wins and no official match loss, bringing her career Australian Open record to 28-7.
Osaka’s Biggest Australian Open Records and Milestones
Two Titles From Two Finals
Osaka has never lost an Australian Open final. She defeated Kvitova in 2019 and Brady in 2021, giving her a 2-0 record in Melbourne title matches.
World No.1 After the 2019 Final
The 2019 championship elevated Osaka to the top of the WTA singles rankings. She became the first Asian singles player to hold the world No.1 position.
Four Hard-Court Grand Slam Titles
All four of Osaka’s major singles championships have come on hard courts: the US Open in 2018 and 2020, plus the Australian Open in 2019 and 2021.
A 28-7 Melbourne Match Record
Her 80 percent win rate through 2026 places Melbourne among her most successful major venues. The total includes 10 appearances and two unbeaten title runs.
Where Osaka Ranks Among Australian Open Champions
Osaka’s two titles do not place her near the all-time numerical record held by Margaret Court, but they give her a significant position in the modern event. She is one of the players considered in broader discussions of the greatest women’s tennis players, although complete-career comparisons involve much more than one tournament.
The Australian Open is one of four Grand Slams at the top of the professional structure. The guide to different types of tennis tournaments explains how majors differ from regular WTA events in draw size, ranking points and prestige.
Osaka’s Melbourne career is defined by a rare combination of efficiency and resilience. Her 2019 final required recovery after losing three championship points, while the 2021 run included saving match points before she eventually lifted the trophy.