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

Sofia Kenin

WTA10d inactive

Glicko-21.844

#189 overall·RD 77

Elo1.829#223 overall

Recent Form

20% Win Rate

Hard

Glicko-21.783#263

Elo1.691#277

Clay

Glicko-21.868#169

Elo1.713#193

Grass

Glicko-21.604#93

Elo1.563#77

Recent Matches

Peyton Stearns

French Open - Paris

2026-05-24Clay6-3 6-3

Oksana Selekhmeteva

Internationaux de Strasbourg - Strasbourg

2026-05-16Clay1-6 6-4 6-1

Bianca Vanessa Andreescu

Internazionali BNL d'Italia - Rome

2026-05-05Clay6-4 7-5

Qinwen Zheng

Mutua Madrid Open - Madrid

2026-04-24Clay1-6 6-3 6-3

Ashlyn Krueger

Mutua Madrid Open - Madrid

2026-04-22Clay7-6(2) 6-4

Iva Jovic

Credit One Charleston Open - Charleston

2026-04-03Clay7-5 7-5

Bianca Vanessa Andreescu

Credit One Charleston Open - Charleston

2026-04-01Clay6-4 6-4

Anna Blinkova

Miami Open - Miami

2026-03-17Hard3-6 6-1 6-3

Katerina Siniakova

BNP Paribas Open - Indian Wells

2026-03-05Hard1-6 6-4 6-1

Clara Tauson

Dubai Duty Free Championships - Dubai

2026-02-16Hard7-6(4) 6-2

Qinwen Zheng

Qatar TotalEnergies Open - Doha

2026-02-09Hard4-6 6-1 6-2

Liudmila Samsonova

Mubadala Abu Dhabi Open - Abu Dhabi

2026-02-01Hard6-4 6-0

Peyton Stearns

Australian Open - Melbourne

2026-01-19Hard6-3 6-2

Maya Joint

Adelaide International - Adelaide

2026-01-13Hard7-6(3) 6-4

Ekaterina Alexandrova

Brisbane International - Brisbane

2026-01-06Hard7-6(2) 6-3

Elena Gabriela Ruse

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2026-01-04Hard6-4 4-6 6-3

Himeno Sakatsume

Hong Kong Tennis Open - Hong Kong

2025-10-28Hard6-2 6-1

Belinda Bencic

Toray Pan Pacific Open - Tokyo

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Ekaterina Alexandrova

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Wakana Sonobe

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Moyuka Uchijima

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Mccartney Kessler

Ningbo Open - Ningbo

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Liudmila Samsonova

Wuhan Open - Wuhan

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Anastasia Zakharova

Wuhan Open - Wuhan

2025-10-07Hard3-6 7-6(5) 6-3

Jasmine Paolini

China Open - Beijing

2025-09-28Hard6-3 6-0

Polina Kudermetova

China Open - Beijing

2025-09-26Hard6-4 6-2

Maya Joint

Korea Open - Seoul

2025-09-17Hard6-3 6-1

Laura Siegemund

Korea Open - Seoul

2025-09-15Hard2-6 6-3 7-5

Ashlyn Krueger

U.S. Open - New York

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Varvara Gracheva

Cincinnati Open - Cincinnati

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Victoria Mboko

Omnium Banque Nationale - Montreal

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Taylor Townsend

Mubadala Citi DC Open - Washington

2025-07-24Hard6-3 6-0

Hailey Baptiste

Mubadala Citi DC Open - Washington

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Jessica Bouzas Maneiro

Wimbledon - London

2025-07-03Grass6-1 7-6(4)

Taylor Townsend

Wimbledon - London

2025-07-01Grass7-6(5) 6-2

Kimberly Birrell

Rothesay International - Eastbourne

2025-06-24Grass6-4 6-4

Rebeka Masarova

Berlin Ladies Open - Berlin

2025-06-16Grass6-3 6-2

Ajla Tomljanovic

Berlin Ladies Open - Berlin

2025-06-15Grass5-7 6-4 7-5

Erika Andreeva

Berlin Ladies Open - Berlin

2025-06-14Grass6-4 6-0

Madison Keys

French Open - Paris

2025-05-31Clay4-6 6-3 7-5

Victoria Azarenka

French Open - Paris

2025-05-29Clay7-6(5) 6-4

Varvara Gracheva

French Open - Paris

2025-05-27Clay6-3 6-1

Danielle Rose Collins

Internationaux de Strasbourg - Strasbourg

2025-05-19Clay6-1 1-6 6-2

Aryna Sabalenka

Internazionali BNL d'Italia - Rome

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Anastasia Pavlyuchenkova

Internazionali BNL d'Italia - Rome

2025-05-09Clay6-3 6-0

Anastasia Potapova

Mutua Madrid Open - Madrid

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Lulu Sun

Mutua Madrid Open - Madrid

2025-04-25Clay6-3 6-2

Jessica Pegula

Credit One Charleston Open - Charleston

2025-04-06Clay6-3 7-5

Amanda Anisimova

Credit One Charleston Open - Charleston

2025-04-05Clay5-2 ret.

Anna Kalinskaya

Credit One Charleston Open - Charleston

2025-04-04Clay6-4 6-3

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