Setlex

Karolína Muchová def. Marta Kostyuk — Round of 16, US Open 2025

🇺🇸
US Open 2025

Grand SlamHardNew York, USA

Played1 Sep 2025

Rounds
  1. R128
  2. R64
  3. R32
  4. R16
  5. QF
  6. Semifinal
  7. Final

🇨🇿ranked WTA number 12 going into this drawWon

Karolína Muchová seeded 11 6 60 6

🇺🇦ranked WTA number 29 going into this draw

Marta Kostyuk seeded 27 3 7 3

Next · Quarterfinalvs 🇯🇵Naomi Osaka

What this match is worth

Points earned

Muchová +430Kostyuk +240

Watch it back

US Open on YouTube (opens in a new tab)

What decided it

  • Two points in it: Muchová won 105 points to 103
  • Muchová broke 3 times from 6 chances, Kostyuk 1 from 10
  • The second set went to a tiebreak, Kostyuk took it 7–0
  • 6 aces and 7 double faults from Kostyuk