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

Flavio Cobolli

ATP2d inactive64 Moderate Fatigue

Glicko-22.084

#21 overall·RD 64

Elo2.185#11 overall

Recent Form

80% Win Rate

Hard

Glicko-21.991#60

Elo1.839#56

Clay

Glicko-22.210#9

Elo1.992#8

Grass

Glicko-21.774#23

Elo1.628#31

Recent Matches

Zachary Svajda

French Open - Paris

2026-06-01Clay6-2 6-3 6-7(3) 7-6(5)

Learner Tien

French Open - Paris

2026-05-30Clay6-2 6-2 6-3

Yibing Wu

French Open - Paris

2026-05-28Clay6-4 6-4 6-4

Andrea Pellegrino

French Open - Paris

2026-05-25Clay6-4 7-6(4) 6-3

Ignacio Buse

Hamburg Open - Hamburg

2026-05-19Clay6-2 7-5

Thiago Agustin Tirante

Internazionali BNL d'Italia - Rome

2026-05-11Clay6-3 6-4

Terence Atmane

Internazionali BNL d'Italia - Rome

2026-05-09Clay7-6(1) 6-3

Alexander Zverev

Mutua Madrid Open - Madrid

2026-04-30Clay6-1 6-4

Daniil Medvedev

Mutua Madrid Open - Madrid

2026-04-28Clay6-3 5-7 6-4

Adolfo Daniel Vallejo

Mutua Madrid Open - Madrid

2026-04-27Clay6-3 6-2

Camilo Ugo Carabelli

Mutua Madrid Open - Madrid

2026-04-25Clay6-7(7) 6-1 6-4

Ben Shelton

BMW Open - Munich

2026-04-19Clay6-2 7-5

Alexander Zverev

BMW Open - Munich

2026-04-18Clay6-3 6-3

Vit Kopriva

BMW Open - Munich

2026-04-17Clay6-3 6-2

Zizou Bergs

BMW Open - Munich

2026-04-15Clay6-2 6-3

Diego Dedura

BMW Open - Munich

2026-04-14Clay6-4 7-5

Alexander Blockx

Monte-Carlo Rolex Masters - Monte-Carlo

2026-04-08Clay6-3 6-3

Francisco Comesana

Monte-Carlo Rolex Masters - Monte-Carlo

2026-04-06Clay7-5 2-6 6-3

Raphael Collignon

Miami Open - Miami

2026-03-20Hard7-5 6-3

Frances Tiafoe

BNP Paribas Open - Indian Wells

2026-03-08Hard6-1 6-2

Miomir Kecmanovic

BNP Paribas Open - Indian Wells

2026-03-06Hard3-6 6-3 6-4

Frances Tiafoe