Marta Kostyuk def. Sloane Stephens — Round of 64, US Open 2026
Grand SlamHardNew York, USA
Played2 Sep 2026
🇺🇦ranked WTA number 11 going into this drawWon
Marta Kostyuk seeded 11 6 7
🇺🇸
Sloane Stephens 1 5
🇺🇦Marta Kostyuk
🇺🇸Sloane Stephens
Match stats
Serve
8
Aces
0
3
Double faults
2
55%
1st serve in
75%
78%
1st serve points won
55%
48%
2nd serve points won
44%
65%
Service points won
52%
3/4
Break points saved
6/10
Serve speed (km/h)
188
Fastest serve
172
171
Average 1st serve
156
139
Average 2nd serve
136
Return
48%
Return points won
35%
4/10
Break points won
1/4
Points
30
Winners
10
27
Unforced errors
20
10/17
Net points won
10/15
73
Total points won
57
Head to head
2–0 Kostyuk
- This matchNew York R64won by Kostyuk
- 2026HardCincinnati R32won by Kostyuk
Stats, 6 months going in
Won–lost
7–3
Last 10 matches
5–5
6–2
Last 30 days
4–2
By surface
8–4
Hard
6–5
16–1
Clay
1–4
5–1
Grass
–
By round
7–0
R64
1–3
6–2
R32
2–2
11–2
At Grand Slams
1–1
How their matches go
35
Completed matches
16
57%
Won in straight sets
31%
26%
Won after losing a set
13%
3%
Lost after winning a set
0%
14%
Lost in straight sets
56%
2–3
Tiebreaks
1–0
9–1
Deciding sets
2–0
24/25
Won after winning set 1
6/6
5/10
Won after losing set 1
1/10
Serve and return, last 5 matches
55%
1st serve in
61%
73%
1st serve points won
64%
44%
2nd serve points won
49%
61%
Break points saved
60%
44%
Return points won
44%
66%
Break points won
52%
6.6
Aces a match
1.2
5.6
Double faults a match
1.2
Last 14 days
3
Matches
1
7
Sets
2
3
Days since last match
2
Common opponents, 6 monthsCommon opponents, 6 months going in
| Opponent | Marta Kostyuk | Sloane Stephens |
|---|---|---|
| 🇷🇺AndreevaNo. 5 | ||
| 🇷🇺AndreevaNo. 5 | WonCincinnati R16LostParis SFWonMadrid F | LostLinz R16 |
| 🇦🇹PotapovaNo. 25 | ||
| 🇦🇹PotapovaNo. 25 | WonMadrid SF | WonCincinnati R64 |
| 🇺🇦Podrez | ||
| 🇺🇦Podrez | WonRouen F | LostRouen R32 |
| 🇩🇪MariaNo. 79 | ||
| 🇩🇪MariaNo. 79 | WonRouen SF | WonLinz R32 |
| Total | ||
| Total | 5–1 | 2–2 |