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

Mayar Sherif

WTA1d inactive

Glicko-21.907

#118 overall·RD 67

Elo1.972#84 overall

Recent Form

80% Win Rate

Hard

Glicko-21.460#1502

Elo1.393#1899

Clay

Glicko-21.999#61

Elo1.888#24

Grass

Glicko-21.264#2482

Elo1.418#2013

Recent Matches

Carlota Martinez Cirez

Open delle Puglie - Foggia

2026-06-02Clay6-0 6-3

Cori Gauff

French Open - Paris

2026-05-28Clay6-3 6-2

Dalma Galfi

French Open - Paris

2026-05-26Clay7-5 6-4

Greetje Minnen

French Open - Paris

2026-05-21Clay6-3 6-0

Martina Trevisan

French Open - Paris

2026-05-20Clay6-7(6) 7-5 6-1

Andrea Lazaro Garcia

French Open - Paris

2026-05-18Clay6-4 3-6 6-4

Dominika Salkova

Parma Ladies Open - Parma

2026-05-13Clay7-6(4) 6-2

Yue Yuan

Parma Ladies Open - Parma

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

Tamara Korpatsch

Internazionali BNL d'Italia - Rome

2026-05-05Clay3-6 7-5 7-6(5)

Anna Blinkova

Internazionali BNL d'Italia - Rome

2026-05-04Clay6-1 6-2

Robin Montgomery

Oeiras Jamor Ladies Open - Oeiras

2026-04-13Clay3-6 7-5 7-6(7)

Polina Kudermetova

Grand Prix Open Villa de Madrid - Madrid

2026-04-06Clay6-1 7-5

Yue Yuan

Credit One Charleston Open - Charleston

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

Andrea Lazaro Garcia

Dubrovnik Open - Dubrovnik

2026-03-28Clay6-3 7-6(4)

Leyre Romero Gormaz

Dubrovnik Open - Dubrovnik

2026-03-27Clay1-6 6-4 6-2

Mia Ristic

Dubrovnik Open - Dubrovnik

2026-03-25Clay6-4 6-3

Noma Akugue Noha

Dubrovnik Open - Dubrovnik

2026-03-23Clay6-4 6-4

Katarzyna Kawa

Megasaray Hotels Open 2 - Antalya

2026-03-03Clay6-3 1-6 6-2

Moyuka Uchijima

Megasaray Hotels Open 1 - Antalya

2026-02-28Clay4-6 7-5 7-5

Amarissa Kiara Toth

Megasaray Hotels Open 1 - Antalya

2026-02-27Clay4-6 6-4 6-4

Anastasia Zolotareva

Megasaray Hotels Open 1 - Antalya

2026-02-26Clay6-4 6-2

Guiomar Zuleta De Reales

Megasaray Hotels Open 1 - Antalya

2026-02-24Clay6-1 7-6(3)

Oleksandra Oliynykova

Transylvania Open - Cluj-Napoca

2026-02-01I.Hard6-7(6) 6-4 6-4

Guiomar Zuleta De Reales

Australian Open - Melbourne

2026-01-12Hard6-4 6-3

Himeno Sakatsume

Workday Canberra International - Canberra

2026-01-07Hard6-3 3-6 6-3

Elena Micic

Workday Canberra International - Canberra

2026-01-06Hard6-4 3-6 7-5

Varvara Lepchenko

Argentina Open - Buenos Aires

2025-11-29Clay6-4 6-4

Caroline Dolehide

Argentina Open - Buenos Aires

2025-11-28Clay3-6 6-4 6-4

Eva Vedder

Argentina Open - Buenos Aires

2025-11-26Clay6-1 6-1

Julia Riera

Argentina Open - Buenos Aires

2025-11-25Clay7-5 7-6(7)

Leolia Jeanjean

LP Open by IND - Colina

2025-11-22Clay6-3 2-6 6-4

Maria Lourdes Carle

LP Open by IND - Colina

2025-11-21Clay6-4 6-2

Miriam Bianca Bulgaru

LP Open by IND - Colina

2025-11-19Clay6-0 6-3

Eva Vedder

LP Open by IND - Colina

2025-11-18Clay1-6 6-3 6-4

Oleksandra Oliynykova

Tucuman Open - Tucuman

2025-11-09Clay3-6 6-2 6-2

Simona Waltert

Tucuman Open - Tucuman

2025-11-08Clay6-4 5-7 6-2

Antonia Vergara Rivera

Tucuman Open - Tucuman

2025-11-07Clay6-1 6-2

Anastasia Zolotareva

Tucuman Open - Tucuman

2025-11-05Clay6-2 6-1

Polona Hercog

Tucuman Open - Tucuman

2025-11-03Clay7-6(4) 7-6(6)

Alice Rame

Engie Open - Florianopolis

2025-10-22Clay2-6 6-4 7-5

Teodora Kostovic

Mallorca Women's Championships - Mallorca

2025-10-08Clay6-3 6-4

Unknown Player

Mallorca Women's Championships - Mallorca

2025-10-06Clay6-0 6-0

Tamara Zidansek

Internazionali Di Calabria - Rende

2025-10-01Clay6-3 6-4

Tatiana Pieri

Internazionali Di Calabria - Rende

2025-09-29Clay6-2 6-3

Ekaterine Gorgodze

Lexus Tolentino Open - Tolentino

2025-09-18Clay6-0 6-2

Celine Naef

Lexus Tolentino Open - Tolentino

2025-09-16Clay6-2 6-1

Tamara Korpatsch

Open Internacional de San Sebastian - San Sebastian

2025-09-11Clay6-1 6-2

Nahia Berecoechea

Open Internacional de San Sebastian - San Sebastian

2025-09-09Clay6-1 6-1

Oleksandra Oliynykova

Montreux Nestle Open - Montreux

2025-09-02Clay6-3 6-4

Jessica Pegula

U.S. Open - New York

2025-08-24Hard6-0 6-4

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