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

Tallon Griekspoor

ATP8d inactive

Glicko-21.959

#76 overall·RD 72

Elo1.916#105 overall

Recent Form

40% Win Rate

Hard

Glicko-21.988#61

Elo1.862#45

Clay

Glicko-21.893#165

Elo1.738#168

Grass

Glicko-21.844#11

Elo1.623#37

Recent Matches

Matteo Arnaldi

French Open - Paris

2026-05-26Clay6-7(9) 6-3 7-6(6) 6-3

Raphael Collignon

Bordeaux Challenger

2026-05-16Clay7-5 6-1

Alex Molcan

Bordeaux Challenger

2026-05-15Clay6-2 6-4

Benjamin Bonzi

Bordeaux Challenger

2026-05-14Clay6-4 6-3

Alexander Blockx

Internazionali BNL d'Italia - Rome

2026-05-08Clay6-7(5) 6-3 6-4

Lorenzo Musetti

Mutua Madrid Open - Madrid

2026-04-26Clay6-4 7-5

Damir Dzumhur

Mutua Madrid Open - Madrid

2026-04-24Clay6-3 6-4

Denis Shapovalov

BMW Open - Munich

2026-04-14Clay6-4 3-6 6-2

Gael Monfils

Monte-Carlo Rolex Masters - Monte-Carlo

2026-04-05Clay6-7(7) 6-1 6-4

Luca Van Assche

Grand Prix Hassan II - Marrakech

2026-04-02Clay6-4 1-6 6-3

Andrey Rublev

Dubai Duty Free Tennis Championships - Dubai

2026-02-27Hard7-5 7-6(6)

Jakub Mensik

Dubai Duty Free Tennis Championships - Dubai

2026-02-26Hard6-3 3-6 6-2

Alexander Bublik

Dubai Duty Free Tennis Championships - Dubai

2026-02-25Hard6-3 7-6(4)

Otto Virtanen

Dubai Duty Free Tennis Championships - Dubai

2026-02-24Hard6-3 6-4

Felix Auger Aliassime

ABN AMRO Open - Rotterdam

2026-02-13I.Hard7-6(2) 6-2

Quentin Halys

ABN AMRO Open - Rotterdam

2026-02-11I.Hard7-5 7-6(11)

Giovanni Mpetshi Perricard

ABN AMRO Open - Rotterdam

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

Titouan Droguet

Open Occitanie - Montpellier

2026-02-06I.Hard7-6(5) 7-6(1)

Pablo Carreno-Busta

Open Occitanie - Montpellier

2026-02-05I.Hard6-4 6-4

Ethan Quinn

Australian Open - Melbourne

2026-01-20Hard6-2 6-3 6-2

Ugo Humbert

Adelaide International - Adelaide

2026-01-14Hard6-4 6-1

Hubert Hurkacz

United Cup - Australia

2026-01-07Hard6-3 7-6(4)

Alexander Zverev

United Cup - Australia

2026-01-04Hard7-5 6-0

Gabriel Diallo

Rolex Paris Masters - Paris

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

Brandon Nakashima

Erste Bank Open - Vienna

2025-10-22I.Hard7-6(4) 7-6(2)

Karen Khachanov

Erste Bank Open - Vienna

2025-10-20I.Hard6-3 5-7 6-4

Jacob Fearnley

BNP Paribas Nordic Open - Stockholm

2025-10-13I.Hard6-3 6-7(6) 7-6(5)

Valentin Vacherot

Shanghai Rolex Masters - Shanghai

2025-10-07Hard4-6 7-6(1) 6-4

Jannik Sinner

Shanghai Rolex Masters - Shanghai

2025-10-05Hard6-7(3) 7-5 3-2 ret.

Jenson Brooksby

Shanghai Rolex Masters - Shanghai

2025-10-03Hard6-1 1-6 6-1

Corentin Moutet

China Open - Beijing

2025-09-26Hard6-4 7-5

Taro Daniel

Chengdu Open - Chengdu

2025-09-20Hard3-6 6-4 6-3

Adrian Mannarino

U.S. Open - New York

2025-08-24Hard7-5 6-4 6-0

Marton Fucsovics

Winston-Salem Open - Winston-Salem

2025-08-19Hard6-3 4-6 6-3

Hamad Medjedovic

Cincinnati Open - Cincinnati

2025-08-10Hard6-4 7-6(3)

Tomas Martin Etcheverry

National Bank Open - Toronto

2025-07-29Hard6-4 7-6(4)

Jesper De Jong

Nordea Open - Bastad

2025-07-18Clay4-6 7-6(3) 6-3

Andrea Pellegrino

Nordea Open - Bastad

2025-07-16Clay4-6 7-6(6) 6-3

Jenson Brooksby

Wimbledon - London

2025-06-30Grass6-2 7-5 6-3

Corentin Moutet

Mallorca Championships - Mallorca

2025-06-28Grass7-5 7-6(3)

Felix Auger Aliassime

Mallorca Championships - Mallorca

2025-06-27Grass6-4 6-4

Gabriel Diallo

Mallorca Championships - Mallorca

2025-06-26Grass6-4 6-4

Ethan Quinn

Mallorca Championships - Mallorca

2025-06-24Grass7-5 6-4

Alexander Zverev

French Open - Paris

2025-06-02Clay6-4 3-0 ret.

Ethan Quinn

French Open - Paris

2025-05-31Clay4-6 6-1 6-7(2) 6-1 6-4

Gabriel Diallo

French Open - Paris

2025-05-29Clay7-5 7-6(3) 1-6 6-3

Marcos Giron

French Open - Paris

2025-05-26Clay4-6 6-3 6-4 7-5

Nikoloz Basilashvili

Bordeaux Challenger

2025-05-17Clay6-4 6-0

Terence Atmane

Bordeaux Challenger

2025-05-16Clay7-6(3) 6-7(11) 7-5

Billy Harris

Bordeaux Challenger

2025-05-15Clay6-3 6-4

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