What is VOPO in tennis betting?

VOPO (Value Over Pinnacle Odds) is the difference between Tennis Glicko's internal win probability (average of Glicko-2 and Elo models) and the implied probability from Pinnacle's odds. A positive VOPO means the market is undervaluing a player.

What is Green EV in tennis betting?

Green EV is Tennis Glicko's high-conviction value signal. It triggers when VOPO exceeds 12% AND the internal win probability is above 50% — indicating the market is significantly mispricing a player.

How accurate is Tennis Glicko?

Tennis Glicko has 72.8% predictive accuracy over the last 30 days, with a Brier Score of 0.1775 — a standard probabilistic calibration metric used in forecasting.

Why use Glicko-2 instead of ATP rankings for tennis predictions?

ATP rankings are a lagging indicator — they ignore surface specialization, injury returns, scheduling fatigue, and form swings. Glicko-2 updates after every match, adjusts for opponent quality, and models rating uncertainty, making it significantly more accurate for predicting match outcomes.

Rankings

Stefanos Tsitsipas

ATP6d inactive

Glicko-21.970

#68 overall·RD 69

Elo1.923#93 overall

Recent Form

40% Win Rate

Hard

Glicko-21.997#57

Elo1.867#42

Clay

Glicko-21.953#100

Elo1.806#85

Grass

Glicko-21.463#3175

Elo1.550#98

Recent Matches

Matteo Arnaldi

French Open - Paris

2026-05-28Clay7-6(2) 5-7 6-3 6-2

Alexandre Muller

French Open - Paris

2026-05-26Clay6-2 3-0 ret.

Learner Tien

Gonet Geneva Open - Geneva

2026-05-20Clay7-6(4) 7-6(2)

Giovanni Mpetshi Perricard

Gonet Geneva Open - Geneva

2026-05-18Clay6-4 7-6(8)

Tomas Machac

Internazionali BNL d'Italia - Rome

2026-05-07Clay6-4 7-6(4)

Casper Ruud

Mutua Madrid Open - Madrid

2026-04-28Clay6-7(4) 7-6(2) 7-6(3)

Daniel Merida Aguilar

Mutua Madrid Open - Madrid

2026-04-27Clay6-4 6-2

Alexander Bublik

Mutua Madrid Open - Madrid

2026-04-25Clay6-2 7-5

Patrick Kypson

Mutua Madrid Open - Madrid

2026-04-23Clay3-6 7-6(6) 7-6(4)

Fabian Marozsan

BMW Open - Munich

2026-04-15Clay3-6 7-6(5) 6-4

Francisco Cerundolo

Monte-Carlo Rolex Masters - Monte-Carlo

2026-04-06Clay7-5 6-4

Arthur Fils

Miami Open - Miami

2026-03-22Hard6-0 6-1

Alex De Minaur

Miami Open - Miami

2026-03-20Hard6-3 7-6(3)

Arthur Fery

Miami Open - Miami

2026-03-19Hard6-1 7-6(4)

Denis Shapovalov

BNP Paribas Open - Indian Wells

2026-03-04Hard6-2 3-6 6-4

Ugo Humbert

Dubai Duty Free Tennis Championships - Dubai

2026-02-24Hard6-4 7-5

Andrey Rublev

Qatar ExxonMobil Open - Doha

2026-02-19Hard6-3 7-6(2)

Daniil Medvedev

Qatar ExxonMobil Open - Doha

2026-02-18Hard6-3 6-4

Moez Echargui

Qatar ExxonMobil Open - Doha

2026-02-17Hard6-4 6-4

Botic Van De Zandschulp

ABN AMRO Open - Rotterdam

2026-02-12I.Hard6-4 7-6(4)

Arthur Rinderknech

ABN AMRO Open - Rotterdam

2026-02-11I.Hard7-5 6-3

Rodrigo Pacheco Mendez

Davis Cup, Group I, PO, GRE-MEX 3-1

2026-02-08I.Hard6-1 7-5

Tomas Machac

Australian Open - Melbourne

2026-01-22Hard6-4 3-6 7-6(5) 7-6(5)

Shintaro Mochizuki

Australian Open - Melbourne

2026-01-20Hard4-6 6-3 6-2 6-2

Aleksandar Vukic

Adelaide International - Adelaide

2026-01-13Hard7-6(3) 7-6(5)

Taylor Fritz

United Cup - Australia

2026-01-07Hard6-4 7-5

Billy Harris

United Cup - Australia

2026-01-05Hard4-6 6-1 7-6(4)

Shintaro Mochizuki

United Cup - Australia

2026-01-02Hard6-3 6-4

Joao Fonseca

Davis Cup, Group I, 1R, GRE-BRA 1-3

2025-09-14Hard6-4 3-6 7-5

Thiago Seyboth Wild

Davis Cup, Group I, 1R, GRE-BRA 1-3

2025-09-13Hard6-2 6-1

Daniel Altmaier

U.S. Open - New York

2025-08-28Hard7-6(5) 1-6 4-6 6-3 7-5

Alexandre Muller

U.S. Open - New York

2025-08-26Hard4-6 6-0 6-1 7-6(5)

Bu Yunchaokete

Winston-Salem Open - Winston-Salem

2025-08-19Hard6-3 6-2

Benjamin Bonzi

Cincinnati Open - Cincinnati

2025-08-11Hard6-7(4) 6-3 6-4

Fabian Marozsan

Cincinnati Open - Cincinnati

2025-08-09Hard7-6(3) 6-2

Christopher O'Connell

National Bank Open - Toronto

2025-07-30Hard6-4 4-6 6-2

Valentin Royer

Wimbledon - London

2025-06-30Grass6-3 6-2 ret.

Alex Michelsen

Terra Wortmann Open - Halle

2025-06-18Grass7-6(5) 7-5

Luciano Darderi

Terra Wortmann Open - Halle

2025-06-16Grass6-4 3-6 7-6(5)

Matteo Gigante

French Open - Paris

2025-05-28Clay6-4 5-7 6-2 6-4

Tomas Martin Etcheverry

French Open - Paris

2025-05-26Clay7-5 6-3 6-4

Arthur Fils

Internazionali BNL d'Italia - Rome

2025-05-11Clay2-6 6-4 6-2

Alexandre Muller

Internazionali BNL d'Italia - Rome

2025-05-09Clay6-2 7-6(3)

Lorenzo Musetti

Mutua Madrid Open - Madrid

2025-04-29Clay7-5 7-6(3)

Jan-Lennard Struff

Mutua Madrid Open - Madrid

2025-04-26Clay3-6 6-4 6-3

Arthur Fils

Barcelona Open Banc Sabadell - Barcelona

2025-04-18Clay2-0 ret.

Sebastian Korda

Barcelona Open Banc Sabadell - Barcelona

2025-04-16Clay7-6(4) 6-4

Reilly Opelka

Barcelona Open Banc Sabadell - Barcelona

2025-04-15Clay6-2 6-2

Lorenzo Musetti

Monte-Carlo Rolex Masters - Monte-Carlo

2025-04-11Clay1-6 6-3 6-4

Nuno Borges

Monte-Carlo Rolex Masters - Monte-Carlo

2025-04-10Clay6-1 6-1

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