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

Panna Udvardy

WTA9d inactive

Glicko-21.915

#110 overall·RD 65

Elo1.931#106 overall

Recent Form

60% Win Rate

Hard

Glicko-21.780#268

Elo1.678#300

Clay

Glicko-21.973#81

Elo1.779#103

Grass

Glicko-21.613#89

Elo1.550#92

Recent Matches

Viktorija Golubic

French Open - Paris

2026-05-25Clay6-0 6-2

Anhelina Kalinina

Grand Prix De SAR La Princesse Lalla Meryem - Rabat

2026-05-22Clay6-0 6-3

Maria Camila Osorio Serrano

Grand Prix De SAR La Princesse Lalla Meryem - Rabat

2026-05-21Clay7-5 6-3

Sada Nahimana

Grand Prix De SAR La Princesse Lalla Meryem - Rabat

2026-05-20Clay6-4 6-1

Hanne Vandewinkel

Grand Prix De SAR La Princesse Lalla Meryem - Rabat

2026-05-18Clay6-4 6-2

Elise Mertens

Internazionali BNL d'Italia - Rome

2026-05-07Clay6-4 6-2

Alina Korneeva

Internazionali BNL d'Italia - Rome

2026-05-06Clay6-2 7-6(2)

Mirra Andreeva

Mutua Madrid Open - Madrid

2026-04-23Clay7-5 6-2

Kimberly Birrell

Mutua Madrid Open - Madrid

2026-04-22Clay6-4 1-6 6-1

Tyra Caterina Grant

Mutua Madrid Open - Madrid

2026-04-21Clay0-6 6-3 6-2

Julieta Pareja

Mutua Madrid Open - Madrid

2026-04-20Clay6-4 6-1

Anhelina Kalinina

Upper Austria Ladies Linz - Linz

2026-04-08Clay5-7 6-1 6-0

Marie Bouzkova

Copa Colsanitas - Bogota

2026-04-05Clay6-7(7) 6-2 6-2

Katarzyna Kawa

Copa Colsanitas - Bogota

2026-04-04Clay7-6(2) 6-1

Emiliana Arango

Copa Colsanitas - Bogota

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

Julieta Pareja

Copa Colsanitas - Bogota

2026-04-01Clay6-0 2-6 6-1

Maria Camila Torres Murcia

Copa Colsanitas - Bogota

2026-03-31Clay6-1 1-6 6-0

Leyre Romero Gormaz

Megasaray Hotels Open 3 - Antalya

2026-03-11Clay6-3 6-4

Anhelina Kalinina

Megasaray Hotels Open 2 - Antalya

2026-03-06Clay7-6(3) 7-5

Polina Kudermetova

Megasaray Hotels Open 2 - Antalya

2026-03-05Clay6-4 7-6(4)

Anastasia Gasanova

Megasaray Hotels Open 2 - Antalya

2026-03-03Clay6-3 6-3

Nuria Brancaccio

Megasaray Hotels Open 1 - Antalya

2026-02-26Clay6-7(9) 6-2 7-5

Carole Monnet

Megasaray Hotels Open 1 - Antalya

2026-02-25Clay6-2 6-1

Diane Parry

Ostrava Open - Ostrava

2026-02-04I.Hard6-1 6-2

Darja Vidmanova

Ostrava Open - Ostrava

2026-02-01I.Hard7-5 6-3

Katerina Siniakova

Australian Open - Melbourne

2026-01-20Hard6-1 6-2

Oksana Selekhmeteva

Hobart International - Hobart

2026-01-10Hard6-2 6-1

Sara Bejlek

ASB Classic - Auckland

2026-01-05Hard7-5 6-1

Despina Papamichail

Quito Open - Quito

2025-12-05Clay6-4 7-5

Laura Samson

Quito Open - Quito

2025-12-04Clay6-1 7-6(3)

Diletta Cherubini

Quito Open - Quito

2025-12-02Clay7-6(3) 6-2

Varvara Lepchenko

Argentina Open - Buenos Aires

2025-11-30Clay6-3 7-5

Veronika Erjavec

Argentina Open - Buenos Aires

2025-11-29Clay6-3 6-3

Miriam Bianca Bulgaru

Argentina Open - Buenos Aires

2025-11-28Clay6-1 6-2

Sara Sorribes Tormo

Argentina Open - Buenos Aires

2025-11-26Clay7-5 6-2

Carolina Meligeni Alves

Argentina Open - Buenos Aires

2025-11-24Clay6-0 6-0

Polona Hercog

LP Open by IND - Colina

2025-11-20Clay7-6(11) 6-1

Luisina Giovannini

LP Open by IND - Colina

2025-11-18Clay6-1 7-6(6)

Despina Papamichail

Tucuman Open - Tucuman

2025-11-04Clay6-4 6-4

Sinja Kraus

Cali Open - Cali

2025-11-01Clay6-2 6-0

Sara Bejlek

Cali Open - Cali

2025-11-01Clay7-6(4) 6-3

Varvara Lepchenko

Cali Open - Cali

2025-10-30Clay7-6(5) 6-0

Yuliana Lizarazo

Cali Open - Cali

2025-10-29Clay7-6(4) 6-4

Antonia Vergara Rivera

Cali Open - Cali

2025-10-28Clay6-3 6-3

Oleksandra Oliynykova

Engie Open - Florianopolis

2025-10-24Clay7-6(3) 7-6(4)

Victoria Bosio

Engie Open - Florianopolis

2025-10-22Clay7-5 4-6 6-3

Tina Nadine Smith

Engie Open - Florianopolis

2025-10-21Clay6-2 6-4

Ekaterine Gorgodze

Rio Ladies Open - Rio de Janeiro

2025-10-14Clay7-6 6-3

Noma Akugue Noha

Mallorca Women's Championships - Mallorca

2025-10-06Clay6-4 6-1

Alevtina Ibragimova

W75 Bucharest 3

2025-10-04Clay6-1 3-6 6-4

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