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

Peyton Stearns

WTA5d inactive

Glicko-21.991

#49 overall·RD 69

Elo2.048#41 overall

Recent Form

60% Win Rate

Hard

Glicko-21.943#70

Elo1.842#72

Clay

Glicko-22.033#47

Elo1.835#48

Grass

Glicko-21.419#2371

Elo1.423#2005

Recent Matches

Belinda Bencic

French Open - Paris

2026-05-29Clay6-3 6-3

Daria Snigur

French Open - Paris

2026-05-27Clay6-4 6-0

Sofia Kenin

French Open - Paris

2026-05-24Clay6-3 6-3

Daria Kasatkina

Internationaux de Strasbourg - Strasbourg

2026-05-19Clay6-1 6-3

Maria Sakkari

Internationaux de Strasbourg - Strasbourg

2026-05-17Clay6-3 6-1

Madison Keys

Internazionali BNL d'Italia - Rome

2026-05-08Clay4-6 6-4 6-2

Janice Tjen

Internazionali BNL d'Italia - Rome

2026-05-06Clay6-4 6-4

Aliona Bolsova

Catalonia Open Solgirones - La Bisbal D'Emporda

2026-04-28Clay6-4 5-7 7-6(4)

Aryna Sabalenka

Mutua Madrid Open - Madrid

2026-04-23Clay7-5 6-3

Lois Boisson

Mutua Madrid Open - Madrid

2026-04-21Clay6-1 6-3

Mccartney Kessler

Credit One Charleston Open - Charleston

2026-04-02Clay6-0 3-6 6-4

Ashlyn Krueger

Credit One Charleston Open - Charleston

2026-04-01Clay7-6(8) 7-5

Jaqueline Cristian

Miami Open - Miami

2026-03-20Hard6-4 7-5

Viktorija Golubic

Miami Open - Miami

2026-03-19Hard7-6(6) 6-4

Solana Sierra

BNP Paribas Open - Indian Wells

2026-03-05Hard7-5 7-5

Taylor Townsend

ATX Open - Austin

2026-03-01Hard7-6(8) 7-5

Kimberly Birrell

ATX Open - Austin

2026-02-28Hard6-3 3-6 6-2

Oksana Selekhmeteva

ATX Open - Austin

2026-02-27Hard6-1 5-7 7-5

Kaja Juvan

ATX Open - Austin

2026-02-26Hard6-0 6-2

Francesca Jones

ATX Open - Austin

2026-02-24Hard3-6 6-3 6-2

Clara Tauson

Dubai Duty Free Championships - Dubai

2026-02-17Hard6-2 6-4

Magdalena Frech

Dubai Duty Free Championships - Dubai

2026-02-15Hard6-4 6-2

Elena Gabriela Ruse

Dubai Duty Free Championships - Dubai

2026-02-14Hard6-2 4-6 6-4

Vera Zvonareva

Dubai Duty Free Championships - Dubai

2026-02-13Hard6-4 3-6 6-4

Vera Zvonareva

Qatar TotalEnergies Open - Doha

2026-02-08Hard2-6 6-2 6-3

Amanda Anisimova

Australian Open - Melbourne

2026-01-24Hard6-1 6-4

Petra Marcinko

Australian Open - Melbourne

2026-01-22Hard6-2 7-5

Sofia Kenin

Australian Open - Melbourne

2026-01-19Hard6-3 6-2

Olga Danilovic

Hobart International - Hobart

2026-01-14Hard7-6(2) 6-1

Barbora Krejcikova

Hobart International - Hobart

2026-01-13Hard6-4 1-6 7-6(4)

Kaitlin Quevedo

ASB Classic - Auckland

2026-01-05Hard6-2 7-5

Katie Volynets

China Open - Beijing

2025-09-24Hard6-4 2-6 6-3

Magdalena Frech

U.S. Open - New York

2025-08-28Hard6-7(6) 6-3 6-2

Darja Semenistaja

U.S. Open - New York

2025-08-25Hard7-5 6-0

Yafan Wang

Tennis in the Land - Cleveland

2025-08-18Hard6-4 3-6 6-3

Anna Kalinskaya

Cincinnati Open - Cincinnati

2025-08-09Hard7-6(4) 4-6 6-1

Yafan Wang

Cincinnati Open - Cincinnati

2025-08-07Hard6-4 6-3

Emma Raducanu

Omnium Banque Nationale - Montreal

2025-07-30Hard6-2 6-4

Venus Williams

Mubadala Citi DC Open - Washington

2025-07-22Hard6-3 6-4

Laura Siegemund

Wimbledon - London

2025-06-30Grass6-4 6-2

Kamilla Rakhimova

Rothesay International - Eastbourne

2025-06-25Grass6-3 6-4

Mingge Xu

Rothesay International - Eastbourne

2025-06-24Grass6-3 6-4

Eva Lys

French Open - Paris

2025-05-25Clay6-0 6-3

Jasmine Paolini

Internazionali BNL d'Italia - Rome

2025-05-15Clay7-5 6-1

Elina Svitolina

Internazionali BNL d'Italia - Rome

2025-05-13Clay6-2 4-6 7-6(4)

Naomi Osaka

Internazionali BNL d'Italia - Rome

2025-05-12Clay6-4 3-6 7-6(4)

Madison Keys

Internazionali BNL d'Italia - Rome

2025-05-10Clay2-6 6-2 7-6(3)

Anna Kalinskaya

Internazionali BNL d'Italia - Rome

2025-05-08Clay6-2 6-3

Nuria Brancaccio

Internazionali BNL d'Italia - Rome

2025-05-06Clay6-3 6-2

Aryna Sabalenka

Mutua Madrid Open - Madrid

2025-04-29Clay6-2 6-4

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