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

MEN33Hot

Age25

BirthplaceHyvinkaa

Height1.93m

Weight82kg

Best HandRight

BackhandTwo-Handed

Recent Form

Win Rate:75%

Fatigue:33/100

Inactive:1 Days

Overall

Glicko-21.962

#83RD 64

Elo1.965

#79

Hard

Glicko-21.970

#87

Elo1.778

#127

Clay

Glicko-21.805

#331

Elo1.581

#721

Grass

Glicko-21.833

#14

Elo1.699

#16

Surface Record

HardClayGrass

20262-10-21-2

20251-32-41-0

20243-50-11-1

20234-40-1—

20221-2——

20211-0——

Recent Matches

Dimitar KuzmanovTampere Challenger2026-07-23Clay6-4 6-2

Pedro Boscardin DiasTampere Challenger2026-07-21Clay4-6 7-6(3) 6-3

Dylan DietrichEFG Swiss Open - Gstaad2026-07-11Clay6-4 7-6(4)

Arthur FeryWimbledon - London2026-07-02Grass5-7 7-6(3) 6-3 6-3

Ben SheltonWimbledon - London2026-06-30Grass6-4 3-6 6-7(8) 6-2 7-6(9)

Nicolai Budkov KjaerWimbledon - London2026-06-25Grass4-6 6-4 6-4 7-5

Luca NardiWimbledon - London2026-06-24Grass6-4 6-4

Pedro Martinez PorteroWimbledon - London2026-06-22Grass6-4 1-6 6-1

Christopher O'ConnellNottingham 2 Challenger2026-06-20Grass7-6(3) 7-6(6)

Zhizhen ZhangNottingham 2 Challenger2026-06-19Grass6-4 6-7(5) 7-5

Billy HarrisNottingham 2 Challenger2026-06-18Grass7-6(3) 7-6(3)

Felix GillNottingham 2 Challenger2026-06-17Grass6-2 6-3

Soon-Woo KwonNottingham 2 Challenger2026-06-16Grass6-2 7-5

Kamil MajchrzakLibema Open - 's-Hertogenbosch2026-06-10Grass6-7(7) 6-4 7-6(4)

Kamil MajchrzakBirmingham Challenger2026-06-08Grass7-6(6) 6-7(5) 7-6(7)

Bu YunchaoketeBirmingham Challenger2026-06-07Grass2-6 7-6(3) 6-3

Filippo RomanoBirmingham Challenger2026-06-05Grass6-4 6-4

Zhizhen ZhangBirmingham Challenger2026-06-02Grass7-6(8) 6-1

August HolmgrenFrench Open - Paris2026-05-18Clay7-6(8) 6-2

Giovanni Mpetshi PerricardBordeaux Challenger2026-05-13Clay2-6 7-5 6-4

Nicolai Budkov KjaerInternazionali BNL d'Italia - Rome2026-05-04Clay6-7(5) 7-6(3) 6-3

Titouan DroguetMutua Madrid Open - Madrid2026-04-20Clay2-6 6-3 6-3

Carlos AlcarazBarcelona Open Banc Sabadell - Barcelona2026-04-14Clay6-4 6-2

Alexandre MullerBarcelona Open Banc Sabadell - Barcelona2026-04-12Clay6-4 6-4

Aleksandar VukicBarcelona Open Banc Sabadell - Barcelona2026-04-11Clay6-3 6-7(7) 6-4

Ethan QuinnMonte-Carlo Rolex Masters - Monte-Carlo2026-04-04Clay3-6 6-2 6-3

Daniel Merida AguilarTiriac Open - Bucharest2026-03-31Clay7-6(4) 5-7 7-5

Nicolai Budkov KjaerThionville Challenger2026-03-07I.Hard4-6 6-2 7-6(3)

Ugo BlanchetThionville Challenger2026-03-06I.Hard7-5 7-6(3)

Pierre-Hugues HerbertThionville Challenger2026-03-05I.Hard7-5 6-4

Tom ParisThionville Challenger2026-03-03I.Hard6-4 1-6 7-6(2)

Tallon GriekspoorDubai Duty Free Tennis Championships - Dubai2026-02-24Hard6-3 6-4

Jan-Lennard StruffDubai Duty Free Tennis Championships - Dubai2026-02-22Hard6-7(7) 6-4 6-4

Aleksandar VukicDubai Duty Free Tennis Championships - Dubai2026-02-21Hard6-2 6-2

Chak Lam Coleman WongDavis Cup, Group I, PO, HKG-FIN 1-32026-02-08I.Hard7-5 6-2

Luca NardiManama Challenger2026-01-31Hard7-6(6) 6-2

Stefano TravagliaManama Challenger2026-01-30Hard6-4 7-5

Lorenzo GiustinoManama Challenger2026-01-29Hard7-6(4) 6-3

Zhizhen ZhangManama Challenger2026-01-27Hard4-6 7-6(12) 7-6(5)

Nicolas MejiaAustralian Open - Melbourne2026-01-13Hard6-3 3-6 6-4

Stefano NapolitanoBergamo Challenger2025-11-19I.Hard3-6 7-6(6) 6-4

Patrick KypsonHelsinki Challenger2025-11-09I.Hard4-6 6-3 6-4

Sascha Gueymard WayenburgHelsinki Challenger2025-11-08I.Hard6-2 6-4

Marin CilicHelsinki Challenger2025-11-07I.Hard7-5 6-4

Emil RuusuvuoriHelsinki Challenger2025-11-06I.Hard6-4 6-2

Gauthier OnclinHelsinki Challenger2025-11-05I.Hard6-1 7-6(6)

Alexander BlockxBratislava 2 Challenger2025-10-31I.Hard4-6 6-3 6-2

Tristan SchoolkateBratislava 2 Challenger2025-10-29I.Hard6-2 6-4

Martin LandaluceBratislava 2 Challenger2025-10-27I.Hard6-2 7-5

Clement TaburBrest Challenger2025-10-21I.Hard4-6 7-6(5) 7-6(3)

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