Match Info

WTA - SINGLES: US Open, hard - 1/64-finals

Date: 26 August 2025, Tuesday

Location: Grandstand (New York, NY)

Where to Watch on TV:


Australia	Stan Sport
Belgium	HBO Max, HBO Max
Bosnia-and-herzegovina	HBO Max
Brazil	ESPN 2
Bulgaria	Eurosport 2, HBO Max
Croatia	HBO Max
Czech-republic	Eurosport 1, Eurosport 2, HBO Max
Denmark	Eurosport 1, Eurosport 2, HBO Max
Finland	Eurosport 1, Eurosport 2, HBO Max
France	Eurosport 1, Eurosport 2, HBO Max
Germany	Eurosport 1, Eurosport 2, Sky Sport Top Event
Hungary	Eurosport 1, Eurosport 2, HBO Max
Italy	Eurosport 2
Moldova	HBO Max
Montenegro	HBO Max
Netherlands	HBO Max
North-macedonia	HBO Max
Norway	Eurosport 1, Eurosport 2, HBO Max
Poland	Eurosport 1, Eurosport 2, HBO Max
Portugal	Eurosport 1, Eurosport 2
Romania	Eurosport 1, Eurosport 2, HBO Max
Serbia	HBO Max
Slovenia	HBO Max
Spain	Eurosport 1, Eurosport 2, HBO Max
Sweden	Eurosport 1, Eurosport 2, HBO Max
Turkey	Eurosport 1, Eurosport 2
United-kingdom	Sky Sports Main Event, Sky Sports+


	Katie Boulter		Marta Kostyuk

	1	2
	2.63	1.5	Watch
	2.54	1.5
	2.46	1.52	Watch
	2.58	1.55
	2.68	1.46	Watch
	2.6	1.5
	2.63	1.5	Watch
Avarage Now (Initially)	2.59 ↓ (3.03)	1.5 ↑ (1.42)

The best margin for this event is 3.3%, offered by

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Current Win Probability

Katie Boulter
36.8%

Marta Kostyuk
63.2%

Initial Probability

(when we started the analysis)

31.8%

68.2%

Our Initial ML Estimation

32.3%

67.7%

Analysis of Changes in Winning Probabilities:

Katie Boulter has improved its chances compared to the initial analysis. (+5%)

Marta Kostyuk has seen a decrease in its chances compared to the initial analysis. (-5%)

ML Model estimates a lower probability for Katie Boulter than the current prediction. (-4.5%)

ML Model estimates a higher probability for Marta Kostyuk than the current prediction. (+4.5%)

Who will win by Users?

1	X	2
33.3%	0%	66.7%

Katie Boulter - Marta Kostyuk Predictions

Users Predictions: 14 users predict this event. Boulter will win (votes: 5 - 35.7%). Kostyuk will win (votes: 9 - 64.3%).
Confidence interval (95%) for Kostyuk: 39.2% – 89.4%.

Over/Under & Asian Handicap Predictions by Selected Experts:

AH +1.5 Sets - Boulter (1.62) (votes: 1 - 100%) .

Overall Expert Consensus (including all markets): 1 Selected Experts predict this event. Boulter (votes: 1 - 100%).

Expected Score (Market Odds): 0:2

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Preview

Boulter is ranked WTA: 48. Kostyuk is ranked WTA: 27.

Recent form of Boulter has been disappointing (last 5 games: 1 wins).

Kostyuk is currently in excellent shape (in the last 5 games, wins – 4).

Kostyuk may have a physical advantage due to more rest days in recent times.

Kostyuk could have a small edge in this match.

We predict that Kostyuk will win today's game, with odds of 1.44.

In the last 1 head-to-head match, Boulter won 1 match, drew 0 matches, lost 0 matches, and goals 2:1.

Form

✺ - easy match; ✺ - difficult match;

- Katie Boulter
WTA Cleveland
21.08.25	Katie Boulter - Viktorija Golubic	1:2 ✺
18.08.25	Katie Boulter - Yue Yuan	2:0 ✺
WTA Cincinnati
07.08.25	Olga Danilovic - Katie Boulter	2:0 ✺
WTA Montreal
28.07.25	Katie Boulter - Renata Zarazua	0:2 ✺
WTA Washington
21.07.25	Maria Sakkari - Katie Boulter	2:0 ✺
Form Coefficient (based on results and difficulties of last matches) - 2.7 LWLLL
- Marta Kostyuk
WTA Cincinnati
11.08.25	Iga Swiatek - Marta Kostyuk	Swiatek I. walkover ✺
09.08.25	Tatjana Maria - Marta Kostyuk	0:2 ✺
WTA Montreal
04.08.25	Marta Kostyuk - Elena Rybakina	Kostyuk M. retired ✺
02.08.25	McCartney Kessler - Marta Kostyuk	1:2 ✺
31.07.25	Marta Kostyuk - Darya Kasatkina	2:1 ✺
Form Coefficient (based on results and difficulties of last matches) - 16 ?W?WW

Latest Head to Head

WTA San Diego
03.03.24	Marta Kostyuk - Katie Boulter	1:2

Katie Boulter - Marta Kostyuk: Predictions, Live Scores & TV Guide