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

Maja Chwalinska

WTA2d inactive39 Low Fatigue🔥 +74.8 HOT

Glicko-22.017

#33 overall·RD 66

Elo2.148#21 overall

Recent Form

100% Win Rate

Hard

Glicko-21.937#73

Elo1.800#109

Clay

Glicko-22.114#26

Elo2.008#7

Grass

Glicko-21.349#2435

Elo1.494#1771

Recent Matches

Diane Parry

French Open - Paris

2026-06-01Clay6-3 6-2

Maria Sakkari

French Open - Paris

2026-05-30Clay1-6 6-3 6-2

Elise Mertens

French Open - Paris

2026-05-28Clay6-4 6-0

Qinwen Zheng

French Open - Paris

2026-05-25Clay6-4 6-0

Suzan Lamens

French Open - Paris

2026-05-21Clay7-6(4) 7-5

Carole Monnet

French Open - Paris

2026-05-20Clay6-0 6-1

Alice Rame

French Open - Paris

2026-05-18Clay6-0 6-3

Federica Urgesi

Parma Ladies Open - Parma

2026-05-11Clay6-3 ret.

Jessika Ponchet

W75 Saint-Gaudens

2026-05-08Clay4-6 6-3 6-2

Lisa Zaar

W75 Saint-Gaudens

2026-05-07Clay3-6 7-5 6-2

Amandine Hesse

W75 Saint-Gaudens

2026-05-06Clay6-4 6-0

Sinja Kraus