Win probability

Thursday, 25 June 2026

20 matches selected · 2 tournaments · model last ran 13:50 UTC

Umpiry rates 20 matches on Thursday, 25 June 2026. The closest is Vilius Gaubas v Dusan Lajovic at 51 % — the model’s most uncertain call of the day. The most one-sided is Robin Montgomery v Marina Bassols Ribera at 87 %. Probabilities come from a per-tour model trained on Elo, surface Elo, recent serve and return form and layoff.

Rated matches · ordered closest first
TimeTournamentRoundMatchProbabilityVerdictH2H
11:20Wimbledon
ATP · grass
FGaubas V.Lajovic D.51 %49 %Toss-up1–0
12:15Wimbledon
WTA · grass
FKudermetova P.Charaeva A.53 %47 %Toss-up5–0
14:10Wimbledon
WTA · grass
FSasnovich A.Andreescu B.55 %45 %Toss-up0–2
10:10Wimbledon
ATP · grass
FHarris B.Zhou Y.57 %43 %Toss-up1–0
10:10Wimbledon
ATP · grass
FZheng M.Smith C.58 %42 %Toss-up1–0
10:10Wimbledon
WTA · grass
FCaterina Grant T.Tan H.60 %40 %Slight edge1–0
10:10Wimbledon
WTA · grass
FKawa K.Day K.64 %36 %Slight edge1–2
10:15Wimbledon
ATP · grass
FSchoolkate T.Mejia N.70 %30 %Clear favourite1–2
10:15Wimbledon
ATP · grass
FSakellaridis S.Tarvet O.70 %30 %Clear favourite0–1
12:00Wimbledon
ATP · grass
FFaria J.Sakamoto R.70 %30 %Clear favourite1–0
10:10Wimbledon
ATP · grass
FTabur C.Mochizuki S.71 %29 %Clear favourite1–1
12:50Wimbledon
WTA · grass
FZhu L.Kostovic T.73 %27 %Clear favourite0–1
13:50Wimbledon
WTA · grass
FVolynets K.Jeanjean L.74 %26 %Clear favourite0–1
13:30Wimbledon
WTA · grass
FTimofeeva M.Watson H.75 %25 %Clear favourite2–0
13:10Wimbledon
WTA · grass
FKrueger A.Iatcenko P.77 %23 %Clear favourite1–0
10:10Wimbledon
ATP · grass
FSafiullin R.Kym J.78 %22 %Clear favourite2–0
10:05Wimbledon
ATP · grass
FLlamas Ruiz P.Boyer T.80 %20 %Clear favourite0–1
10:10Wimbledon
WTA · grass
FSawangkaew M.Dodin O.81 %19 %Strong favourite1–0
10:10Wimbledon
ATP · grass
FBarrios Vera T.Sweeny D.83 %17 %Strong favourite0–2
14:20Wimbledon
WTA · grass
FMontgomery R.Bassols Ribera M.87 %13 %Strong favourite4–0

How to read this

Each row gives the model’s probability that the favourite wins, and the verdict says the same thing in words. Rows are ordered by how close the model thinks the match is, so the top of the table is where it is least sure. A 70 % favourite losing is not a broken model — it is the 30 %. Probabilities are not odds and take no account of any market.

How often the model has been right

Umpiry win-probability model accuracy by tour family, measured on the predictions the model made
TourCorrect
ATP / WTA66 %
Challenger (men)64 %
Challenger (women)68 %
ITF (men)66 %
ITF (women)64 %

Measured on the predictions the model actually made, not on a backtest — see Methodology.

Yesterday

Wednesday, 24 June 2026 · 20 matches

Favourites won

11 / 20

Model expected

12.6

The model expected 12.6 favourites to win; 11 did. See yesterday’s page.

Biggest shock, last 7 days

23 Jun
Eastbourne
ATP · grass
R32

Surprise score

88

Questions

How is the probability calculated?
A separate model for each tour, trained on Elo, surface-specific Elo, recent serve and return form and time since the player’s last match. It runs several times a day; the time of the last run is at the top of this page.
How often is the model right?
We publish it. The table above gives the hit rate for each tour family, measured on the predictions the model actually made — see Methodology for how it is computed.
Why are the closest matches at the top?
Rows are ordered by distance from 50 %, so the table opens where the model is least sure. “Most one-sided” reverses the order and groups the rows by tournament.
Is this a betting tip?
No. The page shows a model’s probability and how often that model has been right. There are no odds, no comparison with a market and no suggested stake.