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

Otto Virtanen

ATP16d inactive❄️ -46.4 COLD

Glicko-21.892

#154 overall·RD 71

Elo1.827#223 overall

Recent Form

0% Win Rate

Hard

Glicko-21.970#84

Elo1.778#122

Clay

Glicko-21.703#580

Elo1.555#896

Grass

Glicko-21.871#6

Elo1.663#20

Recent Matches

August Holmgren

French Open - Paris

2026-05-18Clay7-6(8) 6-2

Giovanni Mpetshi Perricard

Bordeaux Challenger

2026-05-13Clay2-6 7-5 6-4

Nicolai Budkov Kjaer

Internazionali BNL d'Italia - Rome

2026-05-04Clay6-7(5) 7-6(3) 6-3

Titouan Droguet

Mutua Madrid Open - Madrid

2026-04-20Clay2-6 6-3 6-3

Carlos Alcaraz

Barcelona Open Banc Sabadell - Barcelona

2026-04-14Clay6-4 6-2

Alexandre Muller

Barcelona Open Banc Sabadell - Barcelona

2026-04-12Clay6-4 6-4

Aleksandar Vukic

Barcelona Open Banc Sabadell - Barcelona

2026-04-11Clay6-3 6-7(7) 6-4

Ethan Quinn

Monte-Carlo Rolex Masters - Monte-Carlo

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

Daniel Merida Aguilar

Tiriac Open - Bucharest

2026-03-31Clay7-6(4) 5-7 7-5

Nicolai Budkov Kjaer

Thionville Challenger

2026-03-07I.Hard4-6 6-2 7-6(3)

Ugo Blanchet

Thionville Challenger

2026-03-06I.Hard7-5 7-6(3)

Pierre-Hugues Herbert

Thionville Challenger

2026-03-05I.Hard7-5 6-4

Tom Paris

Thionville Challenger

2026-03-03I.Hard6-4 1-6 7-6(2)

Tallon Griekspoor

Dubai Duty Free Tennis Championships - Dubai

2026-02-24Hard6-3 6-4

Jan-Lennard Struff

Dubai Duty Free Tennis Championships - Dubai

2026-02-22Hard6-7(7) 6-4 6-4

Aleksandar Vukic

Dubai Duty Free Tennis Championships - Dubai

2026-02-21Hard6-2 6-2

Chak Lam Coleman Wong

Davis Cup, Group I, PO, HKG-FIN 1-3

2026-02-08I.Hard7-5 6-2

Luca Nardi

Manama Challenger

2026-01-31Hard7-6(6) 6-2

Stefano Travaglia

Manama Challenger

2026-01-30Hard6-4 7-5

Lorenzo Giustino

Manama Challenger

2026-01-29Hard7-6(4) 6-3

Zhizhen Zhang

Manama Challenger

2026-01-27Hard4-6 7-6(12) 7-6(5)

Nicolas Mejia

Australian Open - Melbourne

2026-01-13Hard6-3 3-6 6-4

Stefano Napolitano

Bergamo Challenger

2025-11-19I.Hard3-6 7-6(6) 6-4

Patrick Kypson

Helsinki Challenger

2025-11-09I.Hard4-6 6-3 6-4

Sascha Gueymard Wayenburg

Helsinki Challenger

2025-11-08I.Hard6-2 6-4

Marin Cilic

Helsinki Challenger

2025-11-07I.Hard7-5 6-4

Emil Ruusuvuori

Helsinki Challenger

2025-11-06I.Hard6-4 6-2

Gauthier Onclin

Helsinki Challenger

2025-11-05I.Hard6-1 7-6(6)

Alexander Blockx

Bratislava 2 Challenger

2025-10-31I.Hard4-6 6-3 6-2

Tristan Schoolkate

Bratislava 2 Challenger

2025-10-29I.Hard6-2 6-4

Martin Landaluce

Bratislava 2 Challenger

2025-10-27I.Hard6-2 7-5

Clement Tabur

Brest Challenger

2025-10-21I.Hard4-6 7-6(5) 7-6(3)

Hugo Gaston

Roanne Challenger

2025-10-12I.Hard6-1 3-6 6-3

Matteo Martineau

Roanne Challenger

2025-10-11I.Hard7-6(3) 6-4

Calvin Hemery

Roanne Challenger

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

Alexander Blockx

Roanne Challenger

2025-10-09I.Hard2-6 6-3 7-6(3)

Tom Paris

Roanne Challenger

2025-10-06I.Hard6-3 7-6(5)

Stefanos Sakellaridis

Istanbul Challenger

2025-09-04Hard6-2 3-1 ret.

Pavel Kotov

Istanbul Challenger

2025-09-02Hard6-4 6-2

Hamish Stewart

Manacor Challenger

2025-08-27Hard6-3 6-3

Leandro Riedi

U.S. Open - New York

2025-08-21Hard7-6(8) 6-4

Benjamin Willwerth

U.S. Open - New York

2025-08-19Hard6-7(5) 6-3 6-2

Tomas Martin Etcheverry

Libema Open - 's-Hertogenbosch

2025-06-10Grass7-6(6) 7-5

Colton Smith

Birmingham Challenger

2025-06-08Grass6-4 6-4

Brandon Holt

Birmingham Challenger

2025-06-07Grass6-4 4-6 7-6(3)

Chak Lam Coleman Wong

Birmingham Challenger

2025-06-06Grass6-2 7-5

Marc-Andrea Huesler

Birmingham Challenger

2025-06-05Grass6-3 6-7(6) 6-1

Aleksandar Vukic

Birmingham Challenger

2025-06-03Grass7-6(4) 6-3

Lloyd Harris

French Open - Paris

2025-05-22Clay6-4 7-5

Antoine Escoffier

French Open - Paris

2025-05-20Clay7-6(3) 6-3

Simulate a match with VirtanenGet win probability, VOPO edge vs Pinnacle odds, and Glicko-2 breakdown.

Open Simulator →