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

Madison Keys

WTA2d inactive47 Low Fatigue

Glicko-22.119

#15 overall·RD 72

Elo2.171#19 overall

Recent Form

60% Win Rate

Hard

Glicko-22.076#16

Elo1.999#18

Clay

Glicko-22.152#18

Elo1.943#10

Grass

Glicko-21.722#34

Elo1.692#12

Recent Matches

Diana Shnaider

French Open - Paris

2026-06-01Clay6-3 3-6 6-0

Victoria Mboko

French Open - Paris

2026-05-30Clay6-3 5-7 7-5

Antonia Ruzic

French Open - Paris

2026-05-28Clay6-4 6-4

Hanne Vandewinkel

French Open - Paris

2026-05-26Clay6-3 6-0

Diane Parry

Trophee Clarins - Paris

2026-05-17Clay3-6 3-3 ret.

Yuliia Starodubtseva

Trophee Clarins - Paris

2026-05-16Clay1-6 6-2 6-3

Anastasia Zakharova

Trophee Clarins - Paris

2026-05-15Clay6-4 6-1

Tiantsoa Rakotomanga Rajaonah

Trophee Clarins - Paris

2026-05-14Clay6-4 6-1

Fiona Ferro

Trophee Clarins - Paris

2026-05-12Clay6-4 6-2

Nikola Bartunkova

Internazionali BNL d'Italia - Rome

2026-05-10Clay6-3 1-6 6-4

Peyton Stearns

Internazionali BNL d'Italia - Rome

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

Yuliia Starodubtseva

Credit One Charleston Open - Charleston

2026-04-04Clay6-1 6-4

Belinda Bencic

Credit One Charleston Open - Charleston

2026-04-03Clay4-6 6-3 6-2

Anna Bondar

Credit One Charleston Open - Charleston

2026-04-02Clay6-2 7-5

Donna Vekic

Credit One Charleston Open - Charleston

2026-04-01Clay6-2 6-3

Qinwen Zheng

Miami Open - Miami

2026-03-22Hard4-6 6-2 6-4

Elena Gabriela Ruse

Miami Open - Miami

2026-03-21Hard6-0 6-3

Sonay Kartal

BNP Paribas Open - Indian Wells

2026-03-09Hard2-6 6-2 6-3

Diane Parry

BNP Paribas Open - Indian Wells

2026-03-07Hard6-4 6-3

Jessica Pegula

Australian Open - Melbourne

2026-01-26Hard6-3 6-4

Karolina Pliskova

Australian Open - Melbourne

2026-01-24Hard6-3 6-3

Ashlyn Krueger

Australian Open - Melbourne

2026-01-22Hard6-1 7-5

Oleksandra Oliynykova

Australian Open - Melbourne

2026-01-20Hard7-6(6) 6-1

Victoria Mboko

Adelaide International - Adelaide

2026-01-15Hard6-4 4-6 6-2

Tereza Valentova

Adelaide International - Adelaide

2026-01-14Hard6-4 6-1

Aryna Sabalenka

Brisbane International - Brisbane

2026-01-09Hard6-3 6-3

Diana Shnaider

Brisbane International - Brisbane

2026-01-08Hard6-7(5) 7-6(5) 7-6(4)

Mccartney Kessler

Brisbane International - Brisbane

2026-01-06Hard6-4 6-3

Amanda Anisimova

WTA Finals - Riyadh

2025-11-03I.Hard4-6 6-3 6-2

Iga Swiatek

WTA Finals - Riyadh

2025-11-01I.Hard6-1 6-2

Renata Zarazua

U.S. Open - New York

2025-08-25Hard6-7(10) 7-6(3) 7-5

Elena Rybakina

Cincinnati Open - Cincinnati

2025-08-13Hard6-7(3) 6-4 6-2

Aoi Ito

Cincinnati Open - Cincinnati

2025-08-11Hard6-4 6-0

Eva Lys

Cincinnati Open - Cincinnati

2025-08-09Hard1-6 6-3 7-6(1)

Clara Tauson

Omnium Banque Nationale - Montreal

2025-08-05Hard6-1 6-4

Karolina Muchova

Omnium Banque Nationale - Montreal

2025-08-03Hard4-6 6-3 7-5

Caty McNally

Omnium Banque Nationale - Montreal

2025-08-01Hard2-6 6-3 6-3

Laura Siegemund

Omnium Banque Nationale - Montreal

2025-07-30Hard6-2 6-1

Laura Siegemund

Wimbledon - London

2025-07-04Grass6-3 6-3

Olga Danilovic

Wimbledon - London

2025-07-02Grass6-4 6-2

Elena Gabriela Ruse

Wimbledon - London

2025-06-30Grass6-7(4) 7-5 7-5

Marketa Vondrousova

Berlin Ladies Open - Berlin

2025-06-17Grass7-5 7-6(6)

Tatjana Maria

LTA London Championships - London

2025-06-14Grass6-3 7-6(3)

Diana Shnaider

LTA London Championships - London

2025-06-13Grass2-6 6-3 6-4

Anastasia Zakharova

LTA London Championships - London

2025-06-11Grass6-3 6-2

Cori Gauff

French Open - Paris

2025-06-04Clay6-7(6) 6-4 6-1

Hailey Baptiste

French Open - Paris

2025-06-02Clay6-3 7-5

Sofia Kenin

French Open - Paris

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

Katie Boulter

French Open - Paris

2025-05-29Clay6-1 6-3

Daria Saville

French Open - Paris

2025-05-26Clay6-2 6-1

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