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

Yue Yuan

WTA16d inactive

Glicko-21.866

#153 overall·RD 64

Elo1.866#166 overall

Recent Form

20% Win Rate

Hard

Glicko-21.836#186

Elo1.751#167

Clay

Glicko-21.819#237

Elo1.631#404

Grass

Glicko-21.416#2375

Elo1.471#1892

Recent Matches

Harriet Dart

French Open - Paris

2026-05-18Clay5-7 6-4 6-2

Mayar Sherif

Parma Ladies Open - Parma

2026-05-12Clay6-4 0-6 6-4

Simona Waltert

Internazionali BNL d'Italia - Rome

2026-05-05Clay6-2 1-6 7-5

Kimberly Birrell

Internazionali BNL d'Italia - Rome

2026-05-04Clay6-3 6-2

Anna Blinkova

Open 35 de Saint-Malo - Saint-Malo

2026-05-01Clay6-3 4-6 6-2

Bianca Vanessa Andreescu

Open 35 de Saint-Malo - Saint-Malo

2026-04-30Clay6-3 3-6 6-0

Lulu Sun

Open 35 de Saint-Malo - Saint-Malo

2026-04-27Clay4-6 6-3 6-4

Linda Klimovicova

Oeiras Open CETO - Oeiras

2026-04-24Clay6-2 6-4

Alisa Oktiabreva

Oeiras Open CETO - Oeiras

2026-04-22Clay6-2 6-2

Ekaterine Gorgodze

Oeiras Open CETO - Oeiras

2026-04-20Clay6-0 6-1

Marina Bassols Ribera

Grand Prix Open Villa de Madrid - Madrid

2026-04-09Clay1-6 6-4 6-4

Carmen Gallardo Guevara

Grand Prix Open Villa de Madrid - Madrid

2026-04-06Clay6-2 5-7 6-4

Elisabetta Cocciaretto

Credit One Charleston Open - Charleston

2026-04-01Clay6-0 7-5

Mayar Sherif

Credit One Charleston Open - Charleston

2026-03-31Clay2-6 7-6(4) 7-6(5)

Kayla Day

Credit One Charleston Open - Charleston

2026-03-29Clay6-1 6-4

Kajsa Rinaldo Persson

Credit One Charleston Open - Charleston

2026-03-28Clay4-6 6-4 6-3

Kimberly Birrell

Miami Open - Miami

2026-03-17Hard6-2 2-6 6-4

Reese Brantmeier

Miami Open - Miami

2026-03-16Hard6-7(6) 6-4 6-2

Oksana Selekhmeteva

Austin 125 - Austin

2026-03-09Hard6-4 6-3

Dalma Galfi

BNP Paribas Open - Indian Wells

2026-03-02Hard6-2 6-4

Ashlyn Krueger

ATX Open - Austin

2026-02-27Hard7-6(5) 6-4

Dalma Galfi

ATX Open - Austin

2026-02-25Hard6-3 6-2

Rebecca Sramkova

ATX Open - Austin

2026-02-24Hard4-6 7-5 6-1

Whitney Osuigwe

ATX Open - Austin

2026-02-22Hard6-4 6-3

Nadia Elle Valdez

ATX Open - Austin

2026-02-21Hard6-0 6-0

Anouk Koevermans

Oeiras 2 Jamor Indoor - Oeiras

2026-02-17I.Hard6-4 6-1

Daria Snigur

Transylvania Open - Cluj-Napoca

2026-02-05I.Hard4-6 6-0 7-5

Sara Sorribes Tormo

Transylvania Open - Cluj-Napoca

2026-02-03I.Hard4-6 6-2 7-6(5)

Antonia Ruzic

Transylvania Open - Cluj-Napoca

2026-02-01I.Hard6-4 5-7 6-2

Iga Swiatek

Australian Open - Melbourne

2026-01-19Hard7-6(5) 6-3

Tamara Zidansek

Australian Open - Melbourne

2026-01-15Hard6-3 6-1

Maria Lourdes Carle

Australian Open - Melbourne

2026-01-14Hard7-6(5) 3-6 6-4

Louisa Chirico

Australian Open - Melbourne

2026-01-13Hard3-6 6-1 6-2

Polina Kudermetova

Workday Canberra International - Canberra

2026-01-08Hard6-1 6-0

Tatiana Prozorova

Workday Canberra International - Canberra

2026-01-07Hard6-4 6-3

Hanne Vandewinkel

Workday Canberra International - Canberra

2026-01-05Hard6-3 6-4

Elena Pridankina

Jiangxi Open - Jiujiang

2025-10-28Hard6-2 3-6 7-6(5)

Ekaterina Alexandrova

Ningbo Open - Ningbo

2025-10-16Hard6-3 6-3

Xinyu Wang

Ningbo Open - Ningbo

2025-10-14Hard6-3 6-3

Jasmine Paolini

Wuhan Open - Wuhan

2025-10-08Hard3-6 6-4 6-3

Lucia Bronzetti

Wuhan Open - Wuhan

2025-10-06Hard7-6(2) 7-6(1)

Iga Swiatek

China Open - Beijing

2025-09-27Hard6-0 6-3

Yulia Putintseva

China Open - Beijing

2025-09-25Hard6-3 6-3

Elisabetta Cocciaretto

Billie Jean King Cup, Finals

2025-09-16I.Hard4-6 7-5 7-5

Liudmila Samsonova

U.S. Open - New York

2025-08-25Hard2-6 6-4 6-4

Katie Boulter

Tennis in the Land - Cleveland

2025-08-18Hard6-4 6-3

Sorana Cirstea

Cincinnati Open - Cincinnati

2025-08-11Hard6-7(2) 6-4 6-4

Diana Shnaider

Cincinnati Open - Cincinnati

2025-08-09Hard6-4 1-6 6-3

Cristina Bucsa

Cincinnati Open - Cincinnati

2025-08-08Hard6-2 6-2

Clervie Ngounoue

Cincinnati Open - Cincinnati

2025-08-06Hard3-6 6-4 6-3

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