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

Botic Van De Zandschulp

ATP9d inactive

Glicko-21.940

#89 overall·RD 71

Elo1.935#84 overall

Recent Form

40% Win Rate

Hard

Glicko-21.954#98

Elo1.803#91

Clay

Glicko-21.929#116

Elo1.760#134

Grass

Glicko-21.371#3297

Elo1.508#199

Recent Matches

Francisco Cerundolo

French Open - Paris

2026-05-25Clay6-3 6-4 6-7(7) 6-4

Quentin Halys

Bordeaux Challenger

2026-05-15Clay6-1 2-0 ret.

Karen Khachanov

Internazionali BNL d'Italia - Rome

2026-05-10Clay5-7 6-4 6-4

Aleksandar Kovacevic

Internazionali BNL d'Italia - Rome

2026-05-08Clay2-6 6-2 7-6(5)

Alexandre Muller

Internazionali BNL d'Italia - Rome

2026-05-06Clay7-5 6-3

Francisco Cerundolo

BMW Open - Munich

2026-04-16Clay6-3 6-0

Marc-Andrea Huesler

BMW Open - Munich

2026-04-13Clay7-6(7) 6-3

Mariano Navone

Tiriac Open - Bucharest

2026-04-04Clay5-7 7-6(3) 7-5

Damir Dzumhur

Tiriac Open - Bucharest

2026-04-03Clay6-3 6-3

Alexander Shevchenko

Tiriac Open - Bucharest

2026-04-01Clay7-5 6-1

Francesco Maestrelli

Tiriac Open - Bucharest

2026-03-31Clay6-3 6-2

Taylor Fritz

Miami Open - Miami

2026-03-20Hard6-3 6-7(2) 6-3

Denis Shapovalov

Miami Open - Miami

2026-03-19Hard7-5 6-3

Juan Manuel Cerundolo

BNP Paribas Open - Indian Wells

2026-03-05Hard7-6(3) 6-7(5) 6-3

Pablo Carreno-Busta

Dubai Duty Free Tennis Championships - Dubai

2026-02-21Hard6-3 6-2

Alex De Minaur

ABN AMRO Open - Rotterdam

2026-02-13I.Hard3-6 7-6(4) 7-5

Stefanos Tsitsipas

ABN AMRO Open - Rotterdam

2026-02-12I.Hard6-4 7-6(4)

Luka Pavlovic

ABN AMRO Open - Rotterdam

2026-02-09I.Hard7-6(5) 6-3

Ugo Humbert

Open Occitanie - Montpellier

2026-02-03I.Hard6-3 6-4

Novak Djokovic

Australian Open - Melbourne

2026-01-24Hard6-3 6-4 7-6(4)

Juncheng Shang

Australian Open - Melbourne

2026-01-22Hard7-6(6) 6-2 6-3

Brandon Nakashima

Australian Open - Melbourne

2026-01-19Hard6-3 4-6 7-6(1) 7-6(3)

Alexander Bublik

Hong Kong Tennis Open - Hong Kong

2026-01-08Hard6-3 6-3

Jan-Lennard Struff

Hong Kong Tennis Open - Hong Kong

2026-01-06Hard6-3 1-6 6-1

Stan Wawrinka

Hellenic Championship - Athens

2025-11-03I.Hard2-6 7-6(5) 7-5

Ethan Quinn

Rolex Paris Masters - Paris

2025-10-26I.Hard6-3 7-6(4)

Jenson Brooksby

Rolex Paris Masters - Paris

2025-10-25I.Hard4-6 6-3 6-3

Reilly Opelka

Swiss Indoors Basel - Basel

2025-10-23I.Hard7-6(5) 6-7(7) 6-3

Jiri Lehecka

Swiss Indoors Basel - Basel

2025-10-22I.Hard6-2 6-2

Mattia Bellucci

Swiss Indoors Basel - Basel

2025-10-18I.Hard7-6(6) 6-4

Eliot Spizzirri

European Open - Brussels

2025-10-16I.Hard7-5 6-0

Joao Fonseca

European Open - Brussels

2025-10-14I.Hard7-5 7-6(2)

Nuno Borges

Shanghai Rolex Masters - Shanghai

2025-10-02Hard7-6(5) 7-6(5)

Terence Atmane

China Open - Beijing

2025-09-24Hard7-6(5) 7-6(7)

Christopher O'Connell

China Open - Beijing

2025-09-23Hard6-2 6-2

Mackenzie Mcdonald

Chengdu Open - Chengdu

2025-09-18Hard6-4 3-6 6-3

Francisco Cerundolo

Davis Cup, World Group, Q2, NED-ARG 1-3

2025-09-12I.Hard7-6(4) 6-1

Holger Rune

U.S. Open - New York

2025-08-25Hard6-3 7-6(4) 7-6(2)

Marton Fucsovics