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

Lucrezia Stefanini

WTA14d inactive

Glicko-21.789

#267 overall·RD 70

Elo1.792#273 overall

Recent Form

20% Win Rate

Hard

Glicko-21.814#220

Elo1.699#262

Clay

Glicko-21.727#406

Elo1.624#423

Grass

Glicko-21.572#115

Elo1.525#134

Recent Matches

Lucia Bronzetti

French Open - Paris

2026-05-20Clay6-4 6-1

Alina Charaeva

French Open - Paris

2026-05-19Clay6-4 7-5

Polona Hercog

W75 Zagreb

2026-05-13Clay7-6(4) 7-5

Jelena Ostapenko

Internazionali BNL d'Italia - Rome

2026-05-06Clay6-0 6-1

Tamara Korpatsch

Catalonia Open Solgirones - La Bisbal D'Emporda

2026-04-27Clay6-2 7-6(4)

Yuliia Starodubtseva

Mutua Madrid Open - Madrid

2026-04-20Clay6-0 6-1

Tereza Martincova

W75 Murska Sobota 1

2026-03-28I.Hard6-2 6-3

Anna-Lena Friedsam

W75 Murska Sobota 1

2026-03-26I.Hard6-1 4-6 7-6(7)

Aneta Laboutkova

W75 Murska Sobota 1

2026-03-25I.Hard6-0 1-6 6-3

Diane Parry

Miami Open - Miami

2026-03-16Hard6-2 4-6 7-5

Sinja Kraus

Austin 125 - Austin

2026-03-10Hard6-3 6-4

Leolia Jeanjean

Austin 125 - Austin

2026-03-09Hard6-7(0) 6-4 7-5

Victoria Jimenez Kasintseva

BNP Paribas Open - Indian Wells

2026-03-02Hard4-6 6-4 6-4

Fiona Ferro

Open Arena - Les Sables d'Olonne

2026-02-18I.Hard6-2 6-4

Matilde Jorge

Oeiras 1 Jamor Indoor - Oeiras

2026-02-13I.Hard2-6 6-1 7-6(6)

Viktorija Golubic

Oeiras 1 Jamor Indoor - Oeiras

2026-02-12I.Hard6-0 5-7 7-5

Angelina Voloshchuk

Oeiras 1 Jamor Indoor - Oeiras

2026-02-09I.Hard6-7(4) 7-6(6) 7-6(4)

Jaqueline Cristian

Transylvania Open - Cluj-Napoca

2026-02-03I.Hard6-2 2-6 7-5

Tamara Zidansek

Transylvania Open - Cluj-Napoca

2026-02-01I.Hard6-1 5-7 6-0

Briana Szabo

Transylvania Open - Cluj-Napoca

2026-01-31I.Hard6-1 6-1

Whitney Osuigwe

Australian Open - Melbourne

2026-01-14Hard7-5 6-2

Eva Vedder

Australian Open - Melbourne

2026-01-13Hard6-4 6-2

En Shuo Liang

Workday Canberra International - Canberra

2026-01-06Hard7-6(5) 6-1

Shuai Zhang

Open BLS de Limoges - Limoges

2025-12-10I.Hard6-2 6-2

Oksana Selekhmeteva