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

Mirra Andreeva

WTA1d inactive45 Low Fatigue

Glicko-22.232

#6 overall·RD 65

Elo2.349#5 overall

Recent Form

100% Win Rate

Hard

Glicko-22.105#14

Elo2.030#13

Clay

Glicko-22.415#2

Elo2.122#2

Grass

Glicko-21.624#81

Elo1.646#25

Recent Matches

Sorana Cirstea

French Open - Paris

2026-06-02Clay6-0 6-3

Jil Teichmann

French Open - Paris

2026-05-31Clay6-3 6-2

Marie Bouzkova

French Open - Paris

2026-05-29Clay6-4 6-2

Marina Bassols Ribera

French Open - Paris

2026-05-27Clay3-6 6-1 6-1

Fiona Ferro

French Open - Paris

2026-05-24Clay6-3 6-3

Cori Gauff

Internazionali BNL d'Italia - Rome

2026-05-12Clay4-6 6-2 6-4

Elise Mertens

Internazionali BNL d'Italia - Rome

2026-05-11Clay6-3 6-3

Viktorija Golubic

Internazionali BNL d'Italia - Rome

2026-05-09Clay6-1 4-6 6-0

Antonia Ruzic

Internazionali BNL d'Italia - Rome

2026-05-07Clay6-1 6-0

Marta Kostyuk

Mutua Madrid Open - Madrid

2026-05-02Clay6-3 7-5

Hailey Baptiste

Mutua Madrid Open - Madrid

2026-04-30Clay6-4 7-6(8)

Leylah Annie Fernandez

Mutua Madrid Open - Madrid

2026-04-28Clay7-6(1) 6-3

Anna Bondar

Mutua Madrid Open - Madrid

2026-04-27Clay6-7(5) 6-3 7-6(5)

Dalma Galfi

Mutua Madrid Open - Madrid

2026-04-25Clay6-3 6-2

Panna Udvardy

Mutua Madrid Open - Madrid

2026-04-23Clay7-5 6-2

Elena Rybakina

Porsche Tennis Grand Prix - Stuttgart

2026-04-18Clay7-5 6-1

Iga Swiatek

Porsche Tennis Grand Prix - Stuttgart

2026-04-17Clay3-6 6-4 6-3

Alycia Parks

Porsche Tennis Grand Prix - Stuttgart

2026-04-16Clay7-6(3) 6-3

Jelena Ostapenko

Porsche Tennis Grand Prix - Stuttgart

2026-04-15Clay5-7 6-2 6-4

Anastasia Potapova

Upper Austria Ladies Linz - Linz

2026-04-12Clay1-6 6-4 6-3

Elena Gabriela Ruse

Upper Austria Ladies Linz - Linz

2026-04-11Clay6-4 6-1

Sorana Cirstea

Upper Austria Ladies Linz - Linz

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

Sloane Stephens

Upper Austria Ladies Linz - Linz

2026-04-08Clay6-4 6-2

Victoria Mboko

Miami Open - Miami

2026-03-23Hard7-6(4) 4-6 6-0

Marie Bouzkova

Miami Open - Miami

2026-03-21Hard7-6(4) 6-2

Mccartney Kessler

Miami Open - Miami

2026-03-19Hard6-1 6-7(3) 6-1

Katerina Siniakova

BNP Paribas Open - Indian Wells

2026-03-09Hard4-6 7-6(5) 6-3

Solana Sierra

BNP Paribas Open - Indian Wells

2026-03-07Hard6-0 6-0

Amanda Anisimova

Dubai Duty Free Championships - Dubai

2026-02-19Hard2-6 7-5 7-6(4)

Jaqueline Cristian

Dubai Duty Free Championships - Dubai

2026-02-18Hard7-5 6-3

Victoria Mboko

Qatar TotalEnergies Open - Doha

2026-02-11Hard6-3 3-6 7-6(5)

Magda Linette

Qatar TotalEnergies Open - Doha

2026-02-09Hard7-6(0) 6-1

Elina Svitolina

Australian Open - Melbourne

2026-01-25Hard6-2 6-4

Elena Gabriela Ruse

Australian Open - Melbourne

2026-01-23Hard6-3 6-4

Maria Sakkari

Australian Open - Melbourne

2026-01-21Hard6-0 6-4

Donna Vekic

Australian Open - Melbourne

2026-01-19Hard4-6 6-3 6-0

Victoria Mboko

Adelaide International - Adelaide

2026-01-17Hard6-3 6-1

Diana Shnaider

Adelaide International - Adelaide

2026-01-16Hard6-3 6-2

Maya Joint

Adelaide International - Adelaide

2026-01-15Hard6-2 6-0

Marie Bouzkova

Adelaide International - Adelaide

2026-01-13Hard6-3 6-1

Marta Kostyuk

Brisbane International - Brisbane

2026-01-09Hard7-6(7) 6-3

Linda Noskova

Brisbane International - Brisbane

2026-01-08Hard5-7 6-4 7-5

Olivia Gadecki

Brisbane International - Brisbane

2026-01-07Hard4-6 6-1 6-2

Lin Zhu

Ningbo Open - Ningbo

2025-10-15Hard4-6 6-3 6-2

Laura Siegemund

Wuhan Open - Wuhan

2025-10-07Hard6-7(4) 6-3 6-3

Sonay Kartal

China Open - Beijing

2025-10-01Hard7-5 2-6 7-5

Jessica Bouzas Maneiro

China Open - Beijing

2025-09-29Hard6-4 6-1

Lin Zhu

China Open - Beijing

2025-09-27Hard6-2 6-2

Taylor Townsend

U.S. Open - New York

2025-08-29Hard7-5 6-2

Anastasia Potapova

U.S. Open - New York

2025-08-27Hard6-1 6-3

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