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Naomi Osaka vs Katerina Siniakova — US Open Round of 64

US OpenR64HardThu 3 Sept · 11:30Final

Naomi Osaka advanced to the next round of the US Open with a victory over Katerina Siniakova in the Round of 64. Osaka won the match 6-2, 5-7, 6-1. In the match, Osaka hit 8 aces and 4 double faults, while Siniakova had 2 aces and 6 double faults; both players converted 50% of break points, with Osaka securing 4 service breaks to Siniakova's 3.

Generated automatically from Umpiry match data.

Key context

  • Match story: Naomi Osaka came through a tight passage before pulling clear — 6–2 5–7 6–1.

How the match was decided

Auto-generated

Osaka N. came through in three sets, breaking twice in each.

  • Breaks of serveOsaka N. 6 · Siniakova K. 3
  • 1st-serve points wonOsaka N. 70% · Siniakova K. 54%
  • AcesOsaka N. 8 · Siniakova K. 2

Turning points

When the match moved
  1. Set 16–2SetOsaka N. · Broke to take the set
  2. Set 24–3Break backSiniakova K. · Broke back
  3. Set 25–4Break backSiniakova K. · Broke back
  4. Set 25–6BreakSiniakova K. · Broke, never broken back
  5. Set 32–0BreakOsaka N. · Broke, never broken back
Serve flowOsaka N. broken 3 times · Siniakova K. broken 6 times.
  • Hold to love/15
  • Hold to 30
  • Hold to 40 / deuce
  • Broken
  • Result unknown
Osaka N.
11/14Siniakova K.
7/13
Set 1Set 2Set 3

Match momentum

Whole matchOsaka N.Siniakova K.
EvenOsaka N.Siniakova K.
Late momentumOsaka N.53
8Last 12 points4
13Last 3 games11
6/10Break points3/9

Break of serve

Match statistics

Osaka N.Siniakova K.
Serve
  • 8Aces2
  • 4Double faults6
  • 70%1st serve points won54%
  • 79% · 11/14Service games held54% · 7/13
Return
  • 50%Break points won50%
  • 6Breaks of serve3

Serve & return performance

Key performance gaps
First-serve pointsOsaka N. won 70% of points behind the first serve, Siniakova K. 54%. Largest performance gap of the match.+16 ptsOsaka N.1st-serve pts won70%Siniakova K.1st-serve pts won54%
AcesOsaka N. served 8 aces, Siniakova K. 2.+6Osaka N.8Siniakova K.2

Common opponents

10 shared · last 12 months
All 10 opponents →

Osaka N. and Siniakova K. faced 10 of the same opponents in the last 12 months. Osaka N. went 13–0 (100%) against them, Siniakova K. 7–5 (58%). Osaka N. came out better against 3 of 7 comparable opponents, Siniakova K. against 0.

13–0100%Osaka N. · better vs 3Record vs common opponents7–558%Siniakova K. · better vs 0
Vs common opponents · derived from scorelines
25–5Sets16–11
171–100Games133–123
1–0Tiebreaks2–0
5–0Deciding sets1–2
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Head-to-head

4 meetings · Osaka N. leads 3–1
Full H2H →
31

Hard: Osaka N. leads 2–0 · Grass: Osaka N. leads 1–0 · Clay: Siniakova K. leads 1–0

Draw

Closing odds

Player context

Before the match
Osaka N.Siniakova K.2 125ELO1 8931 953Hard ELO1 7577–3Last 104–628Age30180 cmHeight174 cmRightPlaysRightCareer $27.2M2026 $2.6MEarningsCareer $18.2M2026 $3.3M

Match info

  • Started11:30 local

Cite this

Naomi Osaka beat Katerina Siniakova 6-2 5-7 6-1. Umpiry, "Naomi Osaka vs Katerina Siniakova — US Open Round of 64", https://umpiry.com/match/2026-09-03/osaka-vs-siniakova-us-open-r64?utm_source=cite (as of 3 September 2026).