Naomi Osaka def. Elise Mertens — Round of 32, US Open 2026
Grand SlamHardNew York, USA
Played5 Sep 2026
🇯🇵ranked WTA number 13 going into this drawWon
Naomi Osaka seeded 13 6 3 7
🇧🇪ranked WTA number 24 going into this draw
Elise Mertens seeded 23 3 6 5
🇯🇵Naomi Osaka
🇧🇪Elise Mertens
Match stats
Serve
9
Aces
3
2
Double faults
5
58%
1st serve in
63%
79%
1st serve points won
68%
35%
2nd serve points won
43%
61%
Service points won
59%
8/11
Break points saved
12/16
Serve speed (km/h)
195
Fastest serve
185
171
Average 1st serve
169
136
Average 2nd serve
138
Return
41%
Return points won
39%
4/16
Break points won
3/11
Points
39
Winners
22
41
Unforced errors
32
9/9
Net points won
7/8
111
Total points won
107
Head to head
4–2 Osaka
Stats, 6 months going in
Won–lost
7–3
Last 10 matches
6–4
4–1
Last 30 days
5–3
By surface
9–4
Hard
8–5
7–3
Clay
5–4
8–2
Grass
7–4
By round
7–0
R32
6–4
4–4
R16
2–5
9–2
At Grand Slams
7–2
How their matches go
31
Completed matches
33
58%
Won in straight sets
42%
16%
Won after losing a set
18%
6%
Lost after winning a set
12%
19%
Lost in straight sets
27%
7–3
Tiebreaks
3–1
5–2
Deciding sets
6–4
22/24
Won after winning set 1
15/17
1/7
Won after losing set 1
5/16
Serve and return, last 5 matches
57%
1st serve in
62%
74%
1st serve points won
73%
52%
2nd serve points won
51%
59%
Break points saved
52%
45%
Return points won
45%
53%
Break points won
38%
7.8
Aces a match
4.6
3.6
Double faults a match
4.0
Last 14 days
2
Matches
6
5
Sets
15
2
Days since last match
2
Common opponents, 6 monthsCommon opponents, 6 months going in
| Opponent | Naomi Osaka | Elise Mertens |
|---|---|---|
| 🇭🇺UdvardyNo. 76 | ||
| 🇭🇺UdvardyNo. 76 | WonCanada R64 | WonMonterrey R16WonRome R64 |
| 🇰🇿RybakinaNo. 2 | ||
| 🇰🇿RybakinaNo. 2 | LostCanada QF | WonLondon R32 |
| 🇵🇭EalaNo. 18 | ||
| 🇵🇭EalaNo. 18 | LostWashington SF | WonBad Homburg R32WonMadrid R64 |
| 🇨🇿MuchováNo. 7 | ||
| 🇨🇿MuchováNo. 7 | LostLondon QFLostBad Homburg F | LostStuttgart R16 |
| 🇩🇪SiegemundNo. 98 | ||
| 🇩🇪SiegemundNo. 98 | WonParis R128 | WonLondon R128 |
| Total | ||
| Total | 2–4 | 6–1 |