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

Tamara Korpatsch

WTA5d inactive

Glicko-21.931

#96 overall·RD 61

Elo1.994#74 overall

Recent Form

60% Win Rate

Hard

Glicko-21.851#164

Elo1.756#160

Clay

Glicko-22.035#45

Elo1.862#34

Grass

Glicko-21.158#2498

Elo1.392#2025

Recent Matches

Elina Svitolina

French Open - Paris

2026-05-29Clay6-2 6-3

Xinyu Wang

French Open - Paris

2026-05-27Clay6-2 2-6 6-3

Sara Sorribes Tormo

French Open - Paris

2026-05-24Clay6-4 6-2

Alina Charaeva

Trophee Clarins - Paris

2026-05-14Clay6-4 6-7(3) 7-5

Clara Burel

Trophee Clarins - Paris

2026-05-12Clay4-6 7-6(5) 6-4

Ksenia Efremova

Trophee Clarins - Paris

2026-05-11Clay3-6 7-5 6-2

Solana Sierra

Internazionali BNL d'Italia - Rome

2026-05-06Clay6-3 6-1

Mayar Sherif

Internazionali BNL d'Italia - Rome

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

Beatrice Ricci

Internazionali BNL d'Italia - Rome

2026-05-04Clay3-6 6-1 6-2

Daria Kasatkina