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

Gabriel Diallo

ATP10d inactive

Glicko-21.890

#155 overall·RD 76

Elo1.877#146 overall

Recent Form

20% Win Rate

Hard

Glicko-21.902#161

Elo1.800#94

Clay

Glicko-21.799#325

Elo1.678#318

Grass

Glicko-21.794#19

Elo1.600#47

Recent Matches

James Duckworth

French Open - Paris

2026-05-24Clay6-3 4-1 ret.

Elmer Moller

Mutua Madrid Open - Madrid

2026-04-24Clay7-5 3-3 ret.

Alexander Zverev

BMW Open - Munich

2026-04-16Clay6-1 6-2

Vitaliy Sachko

BMW Open - Munich

2026-04-13Clay6-1 6-2

Joao Fonseca

Monte-Carlo Rolex Masters - Monte-Carlo

2026-04-06Clay6-2 6-3

Alex Molcan

Tiriac Open - Bucharest

2026-04-01Clay6-2 6-2

Ugo Humbert

Miami Open - Miami

2026-03-21Hard6-1 6-4

Yibing Wu

Miami Open - Miami

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

Felix Auger Aliassime

BNP Paribas Open - Indian Wells

2026-03-08Hard6-7(5) 6-3 6-3

Andrey Rublev

BNP Paribas Open - Indian Wells

2026-03-07Hard6-7(4) 7-6(1) 6-3

Mattia Bellucci

BNP Paribas Open - Indian Wells

2026-03-04Hard7-6(5) 6-4

Adam Walton

Delray Beach Open - Delray Beach

2026-02-17Hard7-6(4) 6-3

Ben Shelton

Dallas Open - Dallas

2026-02-10I.Hard6-4 6-4

Matheus Pucinelli De Almeida

Davis Cup, World Group, Q, CAN-BRA 3-2

2026-02-07I.Hard3-6 6-1 7-6(4)

Gustavo Heide

Davis Cup, World Group, Q, CAN-BRA 3-2

2026-02-06I.Hard7-6(4) 3-6 7-6(3)

Alexander Zverev

Australian Open - Melbourne

2026-01-18Hard6-7(1) 6-1 6-4 6-2

Andrea Vavassori

Adelaide International - Adelaide

2026-01-13Hard6-3 7-6(4)

Chak Lam Coleman Wong

Hong Kong Tennis Open - Hong Kong

2026-01-07Hard1-6 7-5 7-5

Jesper De Jong

Hong Kong Tennis Open - Hong Kong

2026-01-06Hard6-4 7-6(7)

Alex De Minaur

Rolex Paris Masters - Paris

2025-10-29I.Hard7-6(8) 4-6 6-3

Tallon Griekspoor

Rolex Paris Masters - Paris

2025-10-28I.Hard6-3 6-4

Felix Auger Aliassime

Swiss Indoors Basel - Basel

2025-10-22I.Hard6-2 7-5

James Duckworth

Almaty Open - Almaty

2025-10-15I.Hard7-6(3) 6-7(3) 6-4

Amir Omarkhanov

Almaty Open - Almaty

2025-10-13I.Hard6-3 6-1

Zizou Bergs

Shanghai Rolex Masters - Shanghai

2025-10-07Hard3-6 7-5 7-6(8)

David Goffin

Shanghai Rolex Masters - Shanghai

2025-10-05Hard3-0 ret.

Benjamin Bonzi

Shanghai Rolex Masters - Shanghai

2025-10-03Hard6-4 6-4

Taylor Fritz

Japan Open Tennis Championships - Tokyo

2025-09-25Hard4-6 6-3 7-6(3)

Daniel Cukierman

Davis Cup, Group I, 1R, CAN-ISR 4-0

2025-09-12I.Hard6-1 6-2

Jaume Antoni Munar Clar

U.S. Open - New York

2025-08-28Hard7-5 6-3 7-5

Damir Dzumhur

U.S. Open - New York

2025-08-25Hard7-6(4) 4-6 7-5 7-5

Hamad Medjedovic

Winston-Salem Open - Winston-Salem

2025-08-20Hard6-4 6-2

Jannik Sinner

Cincinnati Open - Cincinnati

2025-08-11Hard6-2 7-6(6)

Sebastian Baez

Cincinnati Open - Cincinnati

2025-08-09Hard7-5 6-4

Taylor Fritz

National Bank Open - Toronto

2025-08-01Hard6-4 6-2

Matteo Gigante

National Bank Open - Toronto

2025-07-30Hard6-3 7-6(5)

Ben Shelton

Citi Open - Washington

2025-07-24Hard6-3 6-2

Fabian Marozsan

Citi Open - Washington

2025-07-22Hard6-3 6-4

Taylor Fritz

Wimbledon - London

2025-07-02Grass3-6 6-3 7-6(0) 4-6 6-3

Daniel Altmaier

Wimbledon - London

2025-06-30Grass6-1 6-2 6-4

Tallon Griekspoor

Mallorca Championships - Mallorca

2025-06-26Grass6-4 6-4

Laslo Djere

Mallorca Championships - Mallorca

2025-06-24Grass6-3 3-6 6-3

Jaume Antoni Munar Clar

Mallorca Championships - Mallorca

2025-06-23Grass7-5 6-3

Jiri Lehecka

cinch Championships - London

2025-06-19Grass6-4 6-2

Billy Harris

cinch Championships - London

2025-06-17Grass6-1 3-6 6-4

Zizou Bergs