Naomi Osaka is a four-time Grand Slam champion, a former World No. 1, and one of the most recognizable athletes in the world. The Japanese star won the US Open (2018, 2020) and the Australian Open (2019, 2021) with a game built on overwhelming power and clean, flat ball-striking, and reached the top of the rankings before stepping away from the tour. Since returning from maternity leave, she has rebuilt steadily, reaching the US Open semifinals in 2025 — her first major semifinal in four years — and a return to the top 20.
The profile is an all-time hard-court force in a determined comeback, chasing a fifth major against a far deeper field than the one she once dominated.
Quick facts
- Full name: Naomi Osaka
- Nationality: Japan (based in the United States)
- Born: October 16, 1997
- Height: 5 ft 11 in (1.80 m)
- Turned pro: 2013
- Plays: Right-handed, two-handed backhand
- Coach: Tomasz Wiktorowski
- Identity: Explosive power baseliner, dominant on hard courts
Season snapshot — June 2026
- Current standing: Around World No. 16 (verify against the live WTA list before publishing; the rankings update on June 8)
- The comeback: Returned in 2024 after the birth of her daughter; through 2025 she reached the Montreal final and the US Open semifinal — her first major semifinal in four years — and climbed back into the top 20
- Career-high: World No. 1, reached 2019
- Career majors: 4 — US Open (2018, 2020) and Australian Open (2019, 2021)
- Career titles: 7
Snapshot data is time-sensitive and scheduled for quarterly review.
Snapshot
Osaka’s game is built on raw power: a huge serve and flat, heavy groundstrokes that, on a fast hard court, can overwhelm anyone. All four of her majors came on hard courts, and her best surface remains where she is most dangerous. She has also been an influential advocate for athlete mental health and a global cultural figure beyond the sport.
Playing style and strengths
Serve. One of the biggest in the women’s game, a constant source of free points.
Flat power. Heavy, clean groundstrokes that end points quickly.
Hard-court pedigree. Four major titles on hard courts underline her ceiling.
Pressure points and vulnerabilities
- Surfaces other than hard courts, where her results have been thinner
- Rediscovering best-of-the-best form against a deeper post-comeback field
- Movement and defense in extended rallies
- Converting her 2025 resurgence into another deep major run
Career milestones
- 2018: Maiden major at the US Open, beating Serena Williams in the final
- 2019: Australian Open title and a first rise to World No. 1
- 2020–2021: Second US Open and second Australian Open titles
- 2025: US Open semifinal and Montreal final, confirming her comeback
Grand Slam record in context
Osaka’s major record is built entirely on hard courts: four titles across the US Open and Australian Open, all before 2022. The 2025 US Open semifinal — beating Coco Gauff and Karolína Muchová en route — showed she can again contend at the majors. A fifth Slam would most likely come on the hard courts where her power is most decisive, against a field deeper than the one she first conquered.
What to watch next
- The US hard-court swing — the surface of all four of her majors
- A fifth Slam — turning her 2025 resurgence into another title run
- Ranking — climbing back toward the top 10 she once led
