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

Ethan Quinn

ATP8d inactive

Glicko-21.966

#70 overall·RD 66

Elo1.917#102 overall

Recent Form

20% Win Rate

Hard

Glicko-21.998#56

Elo1.870#40

Clay

Glicko-21.910#141

Elo1.696#265

Grass

Glicko-21.537#159

Elo1.520#155

Recent Matches

Francisco Comesana

French Open - Paris

2026-05-26Clay6-4 7-6(8) 7-6(4)

Tommy Paul

Hamburg Open - Hamburg

2026-05-17Clay6-1 6-3

Pablo Llamas Ruiz

Internazionali BNL d'Italia - Rome

2026-05-07Clay6-3 5-7 6-3

Alejandro Tabilo

Aix En Provence Challenger

2026-05-02Clay6-3 3-6 7-6(2)

Yibing Wu

Aix En Provence Challenger

2026-05-01Clay6-4 5-7 6-4

Martin Landaluce

Aix En Provence Challenger

2026-04-30Clay1-6 7-6(5) 7-6(5)

Fabian Marozsan

Mutua Madrid Open - Madrid

2026-04-23Clay7-6(5) 7-6(6)

Cameron Norrie

Barcelona Open Banc Sabadell - Barcelona

2026-04-15Clay6-3 4-6 6-4

Reilly Opelka

Barcelona Open Banc Sabadell - Barcelona

2026-04-13Clay7-5 7-6(7)

Daniel Merida Aguilar

Barcelona Open Banc Sabadell - Barcelona

2026-04-12Clay6-3 6-1

Nikoloz Basilashvili

Barcelona Open Banc Sabadell - Barcelona

2026-04-11Clay2-6 7-6(9) 6-4

Terence Atmane

Monte-Carlo Rolex Masters - Monte-Carlo

2026-04-07Clay6-1 6-4

Francisco Comesana

Monte-Carlo Rolex Masters - Monte-Carlo

2026-04-05Clay7-5 6-2

Otto Virtanen

Monte-Carlo Rolex Masters - Monte-Carlo

2026-04-04Clay3-6 6-2 6-3

Jiri Lehecka

Miami Open - Miami

2026-03-22Hard6-3 7-6(6)

Casper Ruud

Miami Open - Miami

2026-03-20Hard6-4 7-6(7)

Hubert Hurkacz

Miami Open - Miami

2026-03-19Hard6-2 6-4

Marcos Giron

Phoenix Challenger

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

Billy Harris

Phoenix Challenger

2026-03-14Hard7-6(6) 7-6(5)

Benjamin Bonzi

Phoenix Challenger

2026-03-13Hard7-6(4) 7-6(7)

Michael Mmoh

Phoenix Challenger

2026-03-12Hard6-1 6-3

Alexander Shevchenko

Phoenix Challenger

2026-03-11Hard6-7(4) 6-4 6-2

Reilly Opelka

BNP Paribas Open - Indian Wells

2026-03-04Hard7-5 7-6(3)

Rafael Jodar

Delray Beach Open - Delray Beach

2026-02-17Hard6-2 6-3

Marin Cilic

Dallas Open - Dallas

2026-02-12I.Hard7-6(4) 6-3

Trevor Svajda

Dallas Open - Dallas

2026-02-11I.Hard7-6(3) 7-5

Fabian Marozsan

Davis Cup, World Group, Q, HUN-USA 0-4

2026-02-07Clay3-6 6-3 7-6(11)

Jakub Mensik

Australian Open - Melbourne

2026-01-24Hard6-2 7-6(5) 7-6

Hubert Hurkacz

Australian Open - Melbourne

2026-01-22Hard6-4 7-6(5) 6-1

Tallon Griekspoor

Australian Open - Melbourne

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

Marton Fucsovics

Adelaide International - Adelaide

2026-01-13Hard6-4 6-4

Raphael Collignon

Brisbane International - Brisbane

2026-01-04Hard7-5 6-3

Benjamin Bonzi

Brisbane International - Brisbane

2026-01-03Hard4-6 6-3 6-3

Karen Khachanov

Rolex Paris Masters - Paris

2025-10-27I.Hard6-1 6-1

Botic Van De Zandschulp

Rolex Paris Masters - Paris

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

Ugo Blanchet

Rolex Paris Masters - Paris

2025-10-25I.Hard6-2 6-3

Damir Dzumhur

Erste Bank Open - Vienna

2025-10-19I.Hard6-3 6-3

Vit Kopriva

Erste Bank Open - Vienna

2025-10-18I.Hard4-6 6-1 6-1

Mark Lajal

BNP Paribas Nordic Open - Stockholm

2025-10-12I.Hard3-6 6-4 6-4

Nikola Slavic

BNP Paribas Nordic Open - Stockholm

2025-10-11I.Hard6-3 6-2

Kamil Majchrzak

Shanghai Rolex Masters - Shanghai

2025-10-02Hard6-3 6-4

Holger Rune

Japan Open Tennis Championships - Tokyo

2025-09-27Hard6-4 6-2

Alex Michelsen

Japan Open Tennis Championships - Tokyo

2025-09-25Hard7-5 6-2

Mattia Bellucci

Japan Open Tennis Championships - Tokyo

2025-09-23Hard4-6 6-4 7-5

Yuta Shimizu

Japan Open Tennis Championships - Tokyo

2025-09-22Hard7-6(4) 6-4

Marcos Giron

Chengdu Open - Chengdu

2025-09-17Hard7-5 6-4

Jerome Kym

U.S. Open - New York

2025-08-24Hard6-3 6-2 3-6 7-6(5)

Jakub Mensik

Cincinnati Open - Cincinnati

2025-08-10Hard6-4 6-2

Miomir Kecmanovic

Cincinnati Open - Cincinnati

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

Brandon Nakashima

National Bank Open - Toronto

2025-07-30Hard7-6(6) 6-4

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