Win probability

Saturday, 25 July 2026

20 matches selected · 15 tournaments · model last ran 17:50 UTC

Umpiry rates 20 matches on Saturday, 25 July 2026. The closest is Adrian Oetzbach v Raphael Perot at 50 % — the model’s most uncertain call of the day. 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
13:00M25 Metzingen
ITF · clay
SFOetzbach A.Perot R.50 %50 %Toss-up0–1
02:30W15 Brisbane 2
ITF · hard
SFYoshimoto N.Aiava D.50 %50 %Toss-up0–1
09:55M25 Ollersbach
ITF · clay
SFJeff Planinsek F.Compagnucci T.52 %48 %Toss-up1–0
11:45W35 Gentofte
ITF · clay
SFBajraliu L.Lew Yan Foon A.52 %48 %Toss-up1–0
01:00M15 Brisbane
ITF · hard
SFHulme M.Dellavedova M.53 %47 %Toss-up0–1
11:40Livesport Prague Open
WTA · hard
SFSnigur D.Valentova T.53 %47 %Toss-up1–1
11:50W100 Amstetten
ITF · clay
SFHerrero Linana A.Wolff V.54 %46 %Toss-up2–1
23:10Winnipeg
CHALLENGER · hard
QFDraxl L.Chidekh C.55 %45 %Toss-up1–1
12:05Hamburg
WTA · clay
SFBondar A.Avanesyan E.55 %45 %Toss-up2–1
08:10M25 Ollersbach
ITF · clay
SFErhard M.Martin A.55 %45 %Toss-up1–0
17:00W100 Evansville
ITF · hard
SFDolehide C.Zarazua R.55 %45 %Toss-up3–2
08:10M25+H Bacau
ITF · clay
SFBatin T.Nicolae Cazacu D.56 %44 %Toss-up0–1
16:10W75 Cordenons
ITF · clay
FRistic M.Brancaccio N.56 %44 %Toss-up2–2
16:40Estoril
ATP · clay
SFVan Assche L.Gaston H.56 %44 %Toss-up3–0
02:30M15 Brisbane
ITF · hard
SFMarkovina D.Delaney J.57 %43 %Toss-up0–2
16:00M25 Denia
ITF · clay
SFLopez Montagud C.Lagutin P.57 %43 %Toss-up0–2
18:55Estoril
ATP · clay
SFDarderi L.Blockx A.59 %41 %Slight edge0–1
15:55Hamburg
WTA · clay
SFSherif M.Korpatsch T.62 %38 %Slight edge1–3
13:50Livesport Prague Open
WTA · hard
SFKrejcikova B.Tagger L.63 %37 %Slight edge0–1
11:10Kitzbuhel
ATP · clay
FBublik A.Halys Q.68 %32 %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

Friday, 24 July 2026 · 20 matches

Favourites won

8 / 20

Model expected

11.3

The model expected 11.3 favourites to win; 8 did. See yesterday’s page.

Biggest shock, last 7 days

24 Jul
W15 Kursumlijska Banja 10
ITF · clay
QF

Surprise score

86

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.