Naomi Osaka def. Katerina Siniakova — Round of 64, US Open 2026
Grand SlamHardNew York, USA
Played3 Sep 2026
🇯🇵ranked WTA number 13 going into this drawWon
Naomi Osaka seeded 13 6 5 6
🇨🇿ranked WTA number 39 going into this draw
Katerina Siniakova 2 7 1
🇯🇵Naomi Osaka
🇨🇿Katerina Siniakova
Match stats
Serve
11
Aces
3
5
Double faults
7
51%
1st serve in
60%
77%
1st serve points won
52%
43%
2nd serve points won
47%
61%
Service points won
50%
5/8
Break points saved
4/10
Serve speed (km/h)
195
Fastest serve
172
172
Average 1st serve
160
134
Average 2nd serve
140
Return
50%
Return points won
39%
6/10
Break points won
3/8
Points
31
Winners
23
29
Unforced errors
37
11/16
Net points won
7/8
97
Total points won
77
Head to head
2–1 Osaka
- This matchNew York R64won by Osaka
- 2025GrassLondon R64won by Osaka
- 2019ClayParis R32won by Siniakova
Stats, 6 months going in
Won–lost
7–3
Last 10 matches
4–6
4–1
Last 30 days
2–2
By surface
8–4
Hard
5–4
7–3
Clay
4–4
8–2
Grass
2–3
By round
6–1
R64
3–4
7–0
R32
2–4
8–2
At Grand Slams
3–2
How their matches go
30
Completed matches
20
60%
Won in straight sets
35%
13%
Won after losing a set
20%
7%
Lost after winning a set
15%
20%
Lost in straight sets
30%
7–3
Tiebreaks
4–4
4–2
Deciding sets
4–3
21/23
Won after winning set 1
7/9
1/7
Won after losing set 1
4/11
Serve and return, last 5 matches
59%
1st serve in
55%
74%
1st serve points won
64%
55%
2nd serve points won
40%
59%
Break points saved
41%
44%
Return points won
44%
53%
Break points won
61%
7.6
Aces a match
1.6
3.2
Double faults a match
7.4
Last 14 days
1
Matches
1
2
Sets
2
3
Days since last match
3
Common opponents, 6 monthsCommon opponents, 6 months going in
| Opponent | Naomi Osaka | Katerina Siniakova |
|---|---|---|
| 🇮🇹CocciarettoNo. 66 | ||
| 🇮🇹CocciarettoNo. 66 | WonWashington QF | WonNew York R128 |
| 🇨🇦FernandezNo. 32 | ||
| 🇨🇦FernandezNo. 32 | WonCanada R16 | WonIndian Wells R64 |
| 🇨🇴Osorio SerranoNo. 58 | ||
| 🇨🇴Osorio SerranoNo. 58 | WonMadrid R64WonIndian Wells R32 | LostMiami R128 |
| Total | ||
| Total | 4–0 | 2–1 |