Marta Kostyuk

Rank: 11Elo: 2027Age: 24

1 - 1

Head-to-Head

Katie Boulter

Rank: 62Elo: 1618Age: 30

Match Prediction

Marta

Kostyuk

Overall: 2027

Hard: 1808

Katie

Boulter

Overall: 1618

Hard: 1568

String Tension Elo Prediction:

Kostyuk 85.1%

-571

ELO Comparison

Match History (2 Matches)

Showing 1 to 2 of 2 matches

U.S. OpenAug 25, 2025

1st Round · Hard

M. Kostyuk

K. Boulter

San DiegoFeb 26, 2024

Final · Hard

M. Kostyuk

722

K. Boulter

566

Date	Tournament	Winner	Score
Aug 25, 2025	U.S. Open\| 1st Round Hard	Marta Kostyuk	66 44
Feb 26, 2024	San Diego\| Final Hard	Katie Boulter	566 722

Recent Matches

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Detailed Stats Comparison

2026 Season Stats

Marta Kostyuk

Katie Boulter

Marta Kostyuk

Season

Katie Boulter

35–10

78% win

19–16

54% win

Serve

4.0

Aces/Match

2.1

4.2

Double Faults/Match

5.7

57%

1st Serve %

58%

71%

1st Serve Won %

67%

48%

2nd Serve Won %

42%

Return

48%

Return Points Won %

43%

4.6/9.4 (49%)

Break Point Offense

3.9/8.8 (44%)

4.2/6.9 (61%)

Break Point Defense

4.2/8.0 (53%)

Season stats are from 2026.