Marta Kostyuk vs Sloane Stephens | Marta Kostyuk Wins 6-1 7-5

US OpenR64HardWed 2 Sept · 12:40Final

SetsGames2

Marta Kostyuk defeated Sloane Stephens in the Round of 64 at the US Open. The match ended with a score of 6-1, 7-5 in Kostyuk's favor. Kostyuk hit 8 aces and converted 40 percent of her break points, while Stephens had no aces and converted 25 percent of her break points; Kostyuk secured 4 service breaks to Stephens' 1.

Generated automatically from Umpiry match data.

Key context

Match story: Marta Kostyuk came through a tight passage before pulling clear — 6–1 7–5.

How the match was decided

Auto-generated

Kostyuk M. took it in straight sets, breaking twice in each.

Breaks of serveKostyuk M. 4 · Stephens S. 1
1st-serve points wonKostyuk M. 78% · Stephens S. 55%
AcesKostyuk M. 8 · Stephens S. 0

Turning points

When the match moved

Set 12–0BreakKostyuk M. · Broke, never broken back
Set 24–4Break backStephens S. · Broke back
Set 26–5BreakKostyuk M. · Broke, never broken back

Serve flowKostyuk M. broken once · Stephens S. broken 4 times.

Hold to love/15
Hold to 30
Hold to 40 / deuce
Broken
Result unknown

Kostyuk M.

9/10Stephens S.

5/9

Set 1Set 2

Match momentum

Whole matchKostyuk M.Stephens S.

Late momentumKostyuk M.31

8Last 12 points4

13Last 3 games11

4/9Break points1/4

Break of serve

Match statistics

Kostyuk M.Stephens S.

Serve

8Aces0
3Double faults2
78%1st serve points won55%
90% · 9/10Service games held56% · 5/9

Return

40%Break points won25%
4Breaks of serve1

Serve & return performance

Key performance gaps

First-serve pointsKostyuk M. won 78% of points behind the first serve, Stephens S. 55%. Largest performance gap of the match.+23 ptsKostyuk M.1st-serve pts won78%Stephens S.1st-serve pts won55%

AcesKostyuk M. served 8 aces, Stephens S. 0.+8Kostyuk M.8Stephens S.0

Common opponents

4 shared · last 12 months

Kostyuk M. and Stephens S. faced 4 of the same opponents in the last 12 months. Kostyuk M. went 6–1 (86%) against them, Stephens S. 2–2 (50%). Kostyuk M. came out better against 2 of 4 comparable opponents, Stephens S. against 0.

6–186%Kostyuk M. · better vs 2Record vs common opponents2–250%Stephens S. · better vs 0

Vs common opponents · derived from scorelines

12–4Sets4–5

83–56Games35–46

1–0Tiebreaks1–0

2–0Deciding sets1–0

Only 4 common opponents — small sample, treat as indicative.

vs Andreeva M.#5W6-3 7-5Madrid · clayL4-6 2-6Linz · hard
vs Potapova A.#25W6-2 1-6 6-1Madrid · clayW6-2 6-4Cincinnati · hard
vs Maria T.#84W6-3 6-0Rouen · clayW1-6 7-6 6-4Linz · hard

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vs Podrez V.#127W6-3 6-4Rouen · clayL2-6 1-6Rouen · clay

Head-to-head

2 meetings · Kostyuk M. leads 2–0

Kostyuk M.September 2026US OpenThis matchHard6-1 7-5
Kostyuk M.August 2026CincinnatiHard7-5 7-5

Draw

Closing odds

Next up

vs Alexandrova E.View match

Player context

Before the match

Kostyuk M.Stephens S.2 145ELO1 8571 920Hard ELO1 7246–4Last 106–424Age33175 cmHeight170 cmRightPlaysRightCareer $10.6M2026 $3.8MEarningsCareer $19.4M2026 $411K

Match info

Started12:40 local

Cite this

Marta Kostyuk beat Sloane Stephens 6-1 7-5. Umpiry, "Marta Kostyuk vs Sloane Stephens — US Open Round of 64", https://umpiry.com/match/2026-09-02/kostyuk-vs-stephens-us-open-r64?utm_source=cite (as of 2 September 2026).