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

Marcos Giron

ATP9d inactive

Glicko-21.917

#116 overall·RD 69

Elo1.866#160 overall

Recent Form

20% Win Rate

Hard

Glicko-21.940#113

Elo1.784#110

Clay

Glicko-21.715#535

Elo1.564#825

Grass

Glicko-21.683#52

Elo1.591#53

Recent Matches

Yibing Wu

French Open - Paris

2026-05-25Clay7-5 6-2 6-4

Ben Shelton

Hamburg Open - Hamburg

2026-05-18Clay6-3 4-6 7-6(3)

Max Schoenhaus

Hamburg Open - Hamburg

2026-05-17Clay6-7(5) 6-4 7-6(5)

Sumit Nagal

Hamburg Open - Hamburg

2026-05-16Clay6-3 6-2

Marin Cilic

Internazionali BNL d'Italia - Rome

2026-05-07Clay7-5 6-4

Roman Andres Burruchaga

Cagliari Challenger

2026-05-01Clay6-3 2-6 7-6(1)

Aleksandar Kovacevic

Cagliari Challenger

2026-04-30Clay6-2 3-6 6-4

Aleksandar Vukic

Cagliari Challenger

2026-04-28Clay6-4 1-6 6-1

Yannick Hanfmann

Mutua Madrid Open - Madrid

2026-04-23Clay6-4 6-7(3) 7-5

Martin Landaluce

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2026-03-19Hard6-3 7-6(6)

Ethan Quinn

Phoenix Challenger

2026-03-15Hard7-6(1) 4-6 7-5

Corentin Moutet

Phoenix Challenger

2026-03-14Hard4-6 6-3 6-4

Nuno Borges

Phoenix Challenger

2026-03-13Hard7-6(8) 6-2

Jay Dylan Hara Friend

Phoenix Challenger

2026-03-12Hard7-5 4-6 7-6(9)

Daniel Merida Aguilar

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2026-03-10Hard6-0 6-1

Jakub Mensik

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2026-03-06Hard7-5 7-6(4)

Mariano Navone

BNP Paribas Open - Indian Wells

2026-03-04Hard4-6 7-5 6-3

Casper Ruud

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Sho Shimabukuro

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2026-02-16Hard6-3 7-5

Taylor Fritz

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2026-02-10I.Hard6-4 5-7 7-6(1)

Learner Tien

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2026-01-19Hard7-6(2) 4-6 3-6 7-6(3) 6-2

Sebastian Baez

ASB Classic - Auckland

2026-01-16Hard6-1 6-4

Luciano Darderi

ASB Classic - Auckland

2026-01-15Hard1-6 7-5 6-4

Alex Michelsen

ASB Classic - Auckland

2026-01-14Hard6-4 6-4

Alexandre Muller

ASB Classic - Auckland

2026-01-13Hard6-2 6-2

Alexander Bublik

Hong Kong Tennis Open - Hong Kong

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Michael Mmoh

Hong Kong Tennis Open - Hong Kong

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Alexandre Muller

Hong Kong Tennis Open - Hong Kong

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Laslo Djere

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2026-01-06Hard6-2 6-0

Yannick Hanfmann

Hellenic Championship - Athens

2025-11-06I.Hard7-6(3) 6-4

Brandon Nakashima

Hellenic Championship - Athens

2025-11-05I.Hard7-6(7) 6-1

Pedro Martinez Portero

Hellenic Championship - Athens

2025-11-04I.Hard6-4 6-1

Daniel Altmaier

Rolex Paris Masters - Paris

2025-10-27I.Hard6-2 7-6(5)

Denis Shapovalov

Swiss Indoors Basel - Basel

2025-10-21I.Hard6-7(3) 6-0 7-6(4)

Alejandro Davidovich Fokina

European Open - Brussels

2025-10-15I.Hard6-7(5) 6-1 6-4

Mattia Bellucci

European Open - Brussels

2025-10-13I.Hard6-3 6-4

Alejandro Tabilo

Shanghai Rolex Masters - Shanghai

2025-10-02Hard6-4 6-3

Sebastian Korda

Japan Open Tennis Championships - Tokyo

2025-09-25Hard4-6 6-3 7-6(4)

Brandon Nakashima

Chengdu Open - Chengdu

2025-09-21Hard6-3 2-6 7-6(3)

Lorenzo Sonego

Chengdu Open - Chengdu

2025-09-19Hard6-4 6-4

Ethan Quinn

Chengdu Open - Chengdu

2025-09-17Hard7-5 6-4

Benjamin Bonzi

U.S. Open - New York

2025-08-27Hard2-6 4-6 7-5 6-3 6-4

Mariano Navone

U.S. Open - New York

2025-08-24Hard6-0 7-5 4-6 5-7 6-4

Mariano Navone

Winston-Salem Open - Winston-Salem

2025-08-19Hard6-2 6-2

Alexander Blockx

Cincinnati Open - Cincinnati

2025-08-08Hard6-2 3-6 6-3

Adrian Mannarino

National Bank Open - Toronto

2025-07-28Hard6-4 6-4

Jaume Antoni Munar Clar

Citi Open - Washington

2025-07-22Hard7-5 6-3

Jakub Mensik

Wimbledon - London

2025-07-03Grass6-4 3-6 6-4 7-6(4)

Camilo Ugo Carabelli

Wimbledon - London

2025-07-01Grass7-6(6) 7-6(4) 6-3

Taylor Fritz

Rothesay International - Eastbourne

2025-06-26Grass7-5 4-6 7-5

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