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

Zizou Bergs

ATP10d inactive

Glicko-21.950

#83 overall·RD 67

Elo1.937#83 overall

Recent Form

20% Win Rate

Hard

Glicko-21.952#103

Elo1.812#79

Clay

Glicko-21.868#214

Elo1.676#326

Grass

Glicko-21.583#122

Elo1.555#92

Recent Matches

Tomas Machac

French Open - Paris

2026-05-24Clay6-4 6-4 6-3

Adolfo Daniel Vallejo

Valencia Challenger

2026-05-15Clay6-4 6-3

Roberto Bautista Agut

Valencia Challenger

2026-05-14Clay6-7(5) 6-3 6-3

Terence Atmane

Internazionali BNL d'Italia - Rome

2026-05-07Clay6-3 6-4

Alejandro Tabilo

Aix En Provence Challenger

2026-05-03Clay6-4 4-6 6-3

Pol Martin Tiffon

Aix En Provence Challenger

2026-05-02Clay6-3 6-4

Rinky Hijikata

Aix En Provence Challenger

2026-05-01Clay5-7 6-2 6-2

Pierre-Hugues Herbert

Aix En Provence Challenger

2026-04-30Clay6-4 6-3

Marin Cilic

Mutua Madrid Open - Madrid

2026-04-22Clay4-6 6-3 6-4

Flavio Cobolli

BMW Open - Munich

2026-04-15Clay6-2 6-3

Marko Topo

BMW Open - Munich

2026-04-14Clay6-1 6-4

Alexander Zverev

Monte-Carlo Rolex Masters - Monte-Carlo

2026-04-09Clay6-2 7-5

Andrey Rublev

Monte-Carlo Rolex Masters - Monte-Carlo

2026-04-08Clay6-4 6-1

Adrian Mannarino

Monte-Carlo Rolex Masters - Monte-Carlo

2026-04-06Clay6-4 6-3

Tomas Martin Etcheverry

Miami Open - Miami

2026-03-21Hard7-6(5) 7-6(3)

Jenson Brooksby

Miami Open - Miami

2026-03-19Hard7-5 6-2

Tommy Paul

BNP Paribas Open - Indian Wells

2026-03-06Hard6-1 6-2

Jan-Lennard Struff

BNP Paribas Open - Indian Wells

2026-03-04Hard6-3 6-4

Jenson Brooksby

Dubai Duty Free Tennis Championships - Dubai

2026-02-24Hard6-3 6-4

Jiri Lehecka

Qatar ExxonMobil Open - Doha

2026-02-18Hard6-2 6-1

Giovanni Mpetshi Perricard

Qatar ExxonMobil Open - Doha

2026-02-17Hard6-3 6-7(5) 6-4

Hamad Medjedovic

ABN AMRO Open - Rotterdam

2026-02-10I.Hard7-6(5) 7-6(5)

Hubert Hurkacz

Australian Open - Melbourne

2026-01-20Hard6-7(6) 7-6(6) 6-3 6-3

Stan Wawrinka

United Cup - Australia

2026-01-10Hard6-3 6-7(4) 6-3

Jakub Mensik

United Cup - Australia

2026-01-08Hard6-2 7-6(4)

Felix Auger Aliassime

United Cup - Australia

2026-01-06Hard6-4 6-2

Zhizhen Zhang

United Cup - Australia

2026-01-03Hard6-7(2) 7-6(3) 7-5

Flavio Cobolli

Davis Cup, World Group, SF, ITA-BEL 2-0

2025-11-21I.Hard6-3 6-7(5) 7-6(15)

Arthur Rinderknech

Davis Cup, World Group, QF, FRA-BEL 0-2

2025-11-18I.Hard6-3 7-6(4)

Jannik Sinner

Rolex Paris Masters - Paris

2025-10-29I.Hard6-4 6-2

Alex Michelsen

Rolex Paris Masters - Paris

2025-10-27I.Hard6-3 2-6 6-2

Raphael Collignon

European Open - Brussels

2025-10-14I.Hard6-4 7-6(5)

Novak Djokovic