Katerina Siniakova vs Nikola BartunkovaWimbledon Round of 64

Wimbledon · WTA · Round of 64
#36WTA
1859ELO
1751Grass ELO
$1.7MYTD
$17MCAREER
30 yrs · 174 cm · Right-handed
Last 10
WLLWWWLWLL
Sets
Wednesday, 1 July 2026 ·
grass
#48WTA
1788ELO
1679Grass ELO
20 yrs · Right-handed
Last 10
WLWWLLWWWW
Siniakova K.
vs
Bartunkova N.

Katerina Siniakova faces Nikola Bartunkova in the Wimbledon round of 64 on grass. Katerina Siniakova holds the paper edge — ranked #36, defending last year's round of 64, a roughly 70-point grass Elo advantage.

Win Probability

Pre-match · updated 23:20 UTC
Siniakova K.62%
Bartunkova N.38%
Toss-up
50–58%
Slight edge
58–67%
Clear favourite
67–80%
Strong favourite
80%+

Slight edge · Siniakova K. narrowly ahead

Calibrated model · 65% favourite accuracy (2025–26, out-of-sample). Probability is a statistical estimate, not a certainty. How it works.

Key context

Umpiry Score

Pre-match
6.8
Slight advantageUmpiry Score
6.6
Marginal edgeUmpiry Score
Form & Matchup
5.9+72 Grass Elo edge
Surface ELO
4.1Grass Elo 1679
5.1Overall Elo 1859
ELO gap
4.9Overall Elo 1788
5.0No prior meetings
H2H
5.0No prior meetings
6.06 of last 10 on grass
Surface form
6.77 of last 10 on grass
Fatigue & Travel
3-set count
4.02 three-setters in 14 days
4.9Won 48% in GBR (23)
Country comfort
Context
6.0Reached the R64 here last year
Defending pts
5.0Didn't play here last year

The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.

Form trajectory

Direction of recent form — results vs Elo expectation blended with serve/return vs each player's baseline, over the last few months. About

14 vs 26 matches

Statistics

This season
1st serve in·Slight edge
67%
57%
1st serve points won·Slight edge
62%
71%
2nd serve points won·Even
47%
48%
Service points won·Even
57%
61%
Return points won·Even
44%
42%
Break points saved·Even
60%
60%
Aces / match·Dominant
1.3
4.4
Double faults / match·Clear edge
3.1
4.3

Averages over each player's completed matches in the selected window (14 vs 26). ATP, WTA & Challenger.

Serve vs return

This season
Siniakova K.serving82% hold

wins 64% of points on serve vs Bartunkova N.

Bartunkova N.serving85% hold

wins 66% of points on serve vs Siniakova K.

Even serve battle

Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About

Clutch

Under pressure
Clutch Rating·Slight edge
62
69
Break points saved·Even
75
76
Break points won·Even
94
90
Deciding sets·Clear edge
46
70
Tiebreaks·
90

Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About

Freshness

Recent load
Freshness·Even
90
90

Siniakova K.: 8 days rest · 5 matches (14d) · Bartunkova N.: 10 days rest · 3 matches (14d). Higher means fresher. About

Conditions

Court speed
Medium-fastrewards aggression
SlowFast
Weather forecast
21°CPartly cloudy
Wind 14 km/hHumidity 53%

Head to head

No previous meetings on record.

R128
R64
R32
R16
Quarter-finals
Semi-finals
Final