Kayla Day vs Madison KeysWimbledon Round of 128

Wimbledon · WTA · Round of 128
#138WTA
1608ELO
1427Grass ELO
26 yrs · 173 cm · Left-handed
Last 10
WWWLLWLWLW
Sets
Tuesday, 30 June 2026 ·
grass
#27WTA
1957ELO
1777Grass ELO
$990kYTD
$24MCAREER
31 yrs · 178 cm · Right-handed
Last 10
WWWWWLWWLW
Day K.
vs
Keys M.

Kayla Day faces Madison Keys in the Wimbledon round of 128 on grass. Madison Keys holds the paper edge — ranked #27, defending last year's round of 32, a roughly 350-point grass Elo advantage. They have met 2 times, the series level at 1–1, though this is their first meeting on grass.

Win Probability

Pre-match · updated 02:20 UTC
Day K.8%
Keys M.92%
Toss-up
50–58%
Slight edge
58–67%
Clear favourite
67–80%
Strong favourite
80%+

Strong favourite · Keys M. heavily favoured

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
5.5
Slight disadvantageUmpiry Score
8.3
Dominant favouriteUmpiry Score
Form & Matchup
0.6Grass Elo 1427
Surface ELO
9.4+350 Grass Elo edge
2.4Overall Elo 1608
ELO gap
7.6Overall Elo 1957
5.0First meeting on grass
H2H
5.0First meeting on grass
5.85 of last 10 on grass
Surface form
8.58 of last 10 on grass
7.03-match win streak
Win streak
9.05-match win streak
Fatigue & Travel
Country comfort
6.6Won 76% in GBR (59)
Context
5.0Didn't play here last year
Defending pts
6.0Reached the R32 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

Day K.Cooling
Keys M.Stable

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

37 vs 18 matches

Statistics

This season
1st serve in·Even
67%
66%
1st serve points won·Even
66%
67%
2nd serve points won·Even
48%
47%
Service points won·Even
60%
60%
Return points won·Even
48%
45%
Break points saved·Slight edge
57%
65%
Aces / match·Slight edge
3.1
4.0
Double faults / match·Slight edge
2.2
2.8

Averages over each player's completed matches in the selected window (37 vs 18). ATP, WTA & Challenger.

Serve vs return

This season
Day K.serving82% hold

wins 64% of points on serve vs Keys M.

Keys M.serving76% hold

wins 61% of points on serve vs Day K.

Serve advantage — Day K.

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·Dominant
37
92
Break points saved·Dominant
66
96
Break points won·Even
88
90
Deciding sets·Dominant
22
96
Tiebreaks·Dominant
52
97

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

Freshness

Recent load
Freshness·Slight edge
76
66

Day K.: 2 days rest · 3 matches, 55 games (7d) · Keys M.: 1 day rest · 4 matches, 56 games (7d). Higher means fresher. About

Conditions

Court speed
Medium-fastrewards aggression
SlowFast
Weather forecast
20°COvercast
Wind 7 km/hHumidity 54%

Head to head

11
DateTournamentRoundSurfaceWinnerScore
2023-05-29Roland GarrosR64clayKayla Day6-2 4-6 6-4
2016-08-29US OpenR64hardMadison Keys6-1 6-1
R128
R64
R32
R16
Quarter-finals
Semi-finals
Final