Win probability

Wednesday, 15 July 2026

12 matches selected · 5 tournaments · model last ran 18:50 UTC

Umpiry rates 12 matches on Wednesday, 15 July 2026. The closest is Pablo Carreno Busta v Camilo Ugo Carabelli at 52 % — the model’s most uncertain call of the day. The most one-sided is Flavio Cobolli v Roman Andres Burruchaga at 75 %. 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
16:15Umag
ATP · clay
R16Carreno Busta P.Ugo Carabelli C.52 %48 %Toss-up0–2
14:15Umag
ATP · clay
R16Prado Angelo J.Dzumhur D.53 %47 %Toss-up0–1
09:10Bastad
ATP · clay
R16Vallejo A.Van De Zandschulp B.56 %44 %Toss-up1–1
09:10Bunschoten
CHALLENGER · clay
R16Elahi Galan D.Romano F.56 %44 %Toss-up1–0
18:35Umag
ATP · clay
R16Droguet T.Van Assche L.58 %42 %Toss-up2–2
12:25Bastad
ATP · clay
R16Borges N.Dimitrov G.59 %41 %Slight edge2–1
14:10Umag
ATP · clay
R16Etcheverry T.Merida Aguilar D.60 %40 %Slight edge0–1
18:10Athens
WTA · hard
R16Bejlek S.Tagger L.60 %40 %Slight edge1–1
14:40Gstaad
ATP · clay
R16Vacherot V.Hanfmann Y.68 %32 %Clear favourite1–0
15:40Bastad
ATP · clay
R16Darderi L.Altmaier D.69 %31 %Clear favourite2–2
19:10Umag
ATP · clay
R16Prizmic D.Molcan A.73 %27 %Clear favourite1–1
17:05Umag
ATP · clay
R16Cobolli F.Burruchaga R.75 %25 %Clear favourite0–2

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

Tuesday, 14 July 2026 · 15 matches

Favourites won

11 / 15

Model expected

8.7

The model expected 8.7 favourites to win; 11 did. See yesterday’s page.

Biggest shock, last 7 days

14 Jul
Rome
CHALLENGER · clay
R32

Surprise score

89

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.