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

Maria Camila Osorio Serrano

WTA4d inactive35 Low Fatigue

Glicko-22.006

#39 overall·RD 64

Elo2.068#32 overall

Recent Form

60% Win Rate

Hard

Glicko-21.988#44

Elo1.914#34

Clay

Glicko-21.977#76

Elo1.788#91

Grass

Glicko-21.450#2347

Elo1.493#1772

Recent Matches

Anna Kalinskaya

French Open - Paris

2026-05-30Clay6-3 0-6 6-2

Yulia Putintseva

French Open - Paris

2026-05-28Clay7-5 6-7(6) 7-5

Ekaterina Alexandrova

French Open - Paris

2026-05-25Clay6-2 6-4

Panna Udvardy

Grand Prix De SAR La Princesse Lalla Meryem - Rabat

2026-05-21Clay7-5 6-3

Janice Tjen

Grand Prix De SAR La Princesse Lalla Meryem - Rabat

2026-05-20Clay6-3 3-6 6-0

Tereza Martincova

Grand Prix De SAR La Princesse Lalla Meryem - Rabat

2026-05-19Clay6-0 6-4

Barbora Krejcikova

Parma Ladies Open - Parma

2026-05-15Clay6-2 1-6 7-5

Dominika Salkova

Parma Ladies Open - Parma

2026-05-14Clay6-1 2-6 6-3

Lucia Bronzetti

Parma Ladies Open - Parma

2026-05-13Clay6-1 7-6(2)

Deborah Chiesa

Parma Ladies Open - Parma

2026-05-12Clay6-1 6-3

Anhelina Kalinina

Internazionali BNL d'Italia - Rome

2026-05-04Clay6-3 7-5

Naomi Osaka

Mutua Madrid Open - Madrid

2026-04-23Clay6-2 7-5

Anastasia Zakharova

Mutua Madrid Open - Madrid

2026-04-21Clay6-0 6-3

Jazmin Ortenzi

Copa Colsanitas - Bogota

2026-04-02Clay7-6(4) 7-6(5)

Caroline Dolehide

Copa Colsanitas - Bogota

2026-03-31Clay6-7(5) 6-2 6-1

Karolina Muchova

Miami Open - Miami

2026-03-20Hard4-6 6-2 7-5

Katerina Siniakova

Miami Open - Miami

2026-03-17Hard6-1 6-4

Naomi Osaka

BNP Paribas Open - Indian Wells

2026-03-08Hard6-1 3-6 6-1

Iva Jovic

BNP Paribas Open - Indian Wells

2026-03-06Hard4-6 7-6(4) 6-3

Sloane Stephens

BNP Paribas Open - Indian Wells

2026-03-04Hard6-4 6-1

Katie Boulter

Merida Open Akron - Merida

2026-02-25Hard6-3 ret.

Janice Tjen

Merida Open Akron - Merida

2026-02-24Hard6-4 6-3

Jelena Ostapenko