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

Sorana Cirstea

WTA1d inactive43 Low Fatigue🔥 +43.1 HOT

Glicko-22.181

#9 overall·RD 65

Elo2.276#10 overall

Recent Form

80% Win Rate

Hard

Glicko-22.136#10

Elo2.040#11

Clay

Glicko-22.284#7

Elo1.941#11

Grass

Glicko-21.268#2480

Elo1.468#1910

Recent Matches

Mirra Andreeva

French Open - Paris

2026-06-02Clay6-0 6-3

Xiyu Wang

French Open - Paris

2026-05-31Clay6-3 7-6(4)

Solana Sierra

French Open - Paris

2026-05-29Clay6-0 6-0

Eva Lys

French Open - Paris

2026-05-27Clay6-3 6-0

Ksenia Efremova

French Open - Paris

2026-05-24Clay6-3 6-1

Cori Gauff

Internazionali BNL d'Italia - Rome

2026-05-14Clay6-4 6-3

Jelena Ostapenko

Internazionali BNL d'Italia - Rome

2026-05-12Clay6-1 7-6(0)

Linda Noskova

Internazionali BNL d'Italia - Rome

2026-05-11Clay6-2 6-4

Aryna Sabalenka

Internazionali BNL d'Italia - Rome

2026-05-09Clay2-6 6-3 7-5

Tatjana Maria

Internazionali BNL d'Italia - Rome

2026-05-07Clay6-2 6-0

Cori Gauff

Mutua Madrid Open - Madrid

2026-04-26Clay4-6 7-5 6-1

Tyra Caterina Grant

Mutua Madrid Open - Madrid

2026-04-24Clay6-2 7-6(5)

Anna Bondar

Open Capfinances Rouen Metropole - Rouen

2026-04-17Clay7-6(2) 6-2

Xinyu Wang

Open Capfinances Rouen Metropole - Rouen

2026-04-16Clay5-3 ret.

Fiona Ferro

Open Capfinances Rouen Metropole - Rouen

2026-04-15Clay6-3 6-7(5) 7-6(2)

Mirra Andreeva

Upper Austria Ladies Linz - Linz

2026-04-10Clay7-6(4) 4-6 6-2

Dalma Galfi

Upper Austria Ladies Linz - Linz

2026-04-08Clay5-0 ret.

Sinja Kraus

Upper Austria Ladies Linz - Linz

2026-04-07Clay6-3 6-3

Cori Gauff

Miami Open - Miami

2026-03-23Hard6-4 3-6 6-2

Elise Mertens

Miami Open - Miami

2026-03-21Hard6-3 6-2

Linda Noskova

Miami Open - Miami

2026-03-20Hard6-2 3-6 6-4

Shuai Zhang

Miami Open - Miami

2026-03-17Hard6-3 6-4

Linda Noskova

BNP Paribas Open - Indian Wells

2026-03-08Hard6-7(5) 6-4 6-4

Diana Shnaider

BNP Paribas Open - Indian Wells

2026-03-06Hard6-2 7-6(0)

Tatjana Maria

BNP Paribas Open - Indian Wells

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

Alexandra Eala

Dubai Duty Free Championships - Dubai

2026-02-18Hard7-5 6-4

Linda Noskova

Dubai Duty Free Championships - Dubai

2026-02-17Hard6-1 6-4

Aliaksandra Sasnovich

Dubai Duty Free Championships - Dubai

2026-02-16Hard6-3 7-6(6)

Emma Raducanu