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

MEN

Age22

BirthplaceFresno, California

Height1.91m

Weight82kg

Best HandRight

BackhandTwo-Handed

Recent Form

Win Rate:63%

Fatigue:0/100

Inactive:23 Days

Overall

Glicko-21.993

#53RD 63

Elo1.971

#74

Hard

Glicko-21.998

#57

Elo1.870

#43

Clay

Glicko-21.910

#143

Elo1.696

#283

Grass

Glicko-21.729

#35

Elo1.582

#66

Surface Record

HardClayGrass

20265-62-66-3

20256-124-42-2

20240-2—1-1

20230-2—1-1

Recent Matches

Shintaro MochizukiWimbledon - London2026-07-01Grass6-2 7-6(6) 7-5

Luciano DarderiWimbledon - London2026-06-29Grass7-6(7) 7-5 6-2

Alejandro Davidovich FokinaMallorca Championships - Mallorca2026-06-27Grass7-6(4) 6-3

Nuno BorgesMallorca Championships - Mallorca2026-06-26Grass6-1 6-2

Vit KoprivaMallorca Championships - Mallorca2026-06-25Grass5-7 7-5 6-3

Murphy CassoneMallorca Championships - Mallorca2026-06-24Grass6-3 6-7(4) 6-3

Valentin RoyerMallorca Championships - Mallorca2026-06-22Grass6-4 6-3

Ben SheltonTerra Wortmann Open - Halle2026-06-18Grass6-4 5-7 6-4

Karen KhachanovTerra Wortmann Open - Halle2026-06-16Grass1-6 6-4 6-4

Francisco ComesanaFrench Open - Paris2026-05-26Clay6-4 7-6(8) 7-6(4)

Tommy PaulHamburg Open - Hamburg2026-05-17Clay6-1 6-3

Pablo Llamas RuizInternazionali BNL d'Italia - Rome2026-05-07Clay6-3 5-7 6-3

Alejandro TabiloAix En Provence Challenger2026-05-02Clay6-3 3-6 7-6(2)

Yibing WuAix En Provence Challenger2026-05-01Clay6-4 5-7 6-4

Martin LandaluceAix En Provence Challenger2026-04-30Clay1-6 7-6(5) 7-6(5)

Fabian MarozsanMutua Madrid Open - Madrid2026-04-23Clay7-6(5) 7-6(6)

Cameron NorrieBarcelona Open Banc Sabadell - Barcelona2026-04-15Clay6-3 4-6 6-4

Reilly OpelkaBarcelona Open Banc Sabadell - Barcelona2026-04-13Clay7-5 7-6(7)

Daniel Merida AguilarBarcelona Open Banc Sabadell - Barcelona2026-04-12Clay6-3 6-1

Nikoloz BasilashviliBarcelona Open Banc Sabadell - Barcelona2026-04-11Clay2-6 7-6(9) 6-4

Terence AtmaneMonte-Carlo Rolex Masters - Monte-Carlo2026-04-07Clay6-1 6-4

Francisco ComesanaMonte-Carlo Rolex Masters - Monte-Carlo2026-04-05Clay7-5 6-2

Otto VirtanenMonte-Carlo Rolex Masters - Monte-Carlo2026-04-04Clay3-6 6-2 6-3

Jiri LeheckaMiami Open - Miami2026-03-22Hard6-3 7-6(6)

Casper RuudMiami Open - Miami2026-03-20Hard6-4 7-6(7)

Hubert HurkaczMiami Open - Miami2026-03-19Hard6-2 6-4

Marcos GironPhoenix Challenger2026-03-15Hard7-6(1) 4-6 7-5

Billy HarrisPhoenix Challenger2026-03-14Hard7-6(6) 7-6(5)

Benjamin BonziPhoenix Challenger2026-03-13Hard7-6(4) 7-6(7)

Michael MmohPhoenix Challenger2026-03-12Hard6-1 6-3

Alexander ShevchenkoPhoenix Challenger2026-03-11Hard6-7(4) 6-4 6-2

Reilly OpelkaBNP Paribas Open - Indian Wells2026-03-04Hard7-5 7-6(3)

Rafael JodarDelray Beach Open - Delray Beach2026-02-17Hard6-2 6-3

Marin CilicDallas Open - Dallas2026-02-12I.Hard7-6(4) 6-3

Trevor SvajdaDallas Open - Dallas2026-02-11I.Hard7-6(3) 7-5

Fabian MarozsanDavis Cup, World Group, Q, HUN-USA 0-42026-02-07Clay3-6 6-3 7-6(11)

Jakub MensikAustralian Open - Melbourne2026-01-24Hard6-2 7-6(5) 7-6

Hubert HurkaczAustralian Open - Melbourne2026-01-22Hard6-4 7-6(5) 6-1

Tallon GriekspoorAustralian Open - Melbourne2026-01-20Hard6-2 6-3 6-2

Marton FucsovicsAdelaide International - Adelaide2026-01-13Hard6-4 6-4

Raphael CollignonBrisbane International - Brisbane2026-01-04Hard7-5 6-3

Benjamin BonziBrisbane International - Brisbane2026-01-03Hard4-6 6-3 6-3

Karen KhachanovRolex Paris Masters - Paris2025-10-27I.Hard6-1 6-1

Botic Van De ZandschulpRolex Paris Masters - Paris2025-10-26I.Hard6-3 7-6(4)

Ugo BlanchetRolex Paris Masters - Paris2025-10-25I.Hard6-2 6-3

Damir DzumhurErste Bank Open - Vienna2025-10-19I.Hard6-3 6-3

Vit KoprivaErste Bank Open - Vienna2025-10-18I.Hard4-6 6-1 6-1

Mark LajalBNP Paribas Nordic Open - Stockholm2025-10-12I.Hard3-6 6-4 6-4

Nikola SlavicBNP Paribas Nordic Open - Stockholm2025-10-11I.Hard6-3 6-2

Kamil MajchrzakShanghai Rolex Masters - Shanghai2025-10-02Hard6-3 6-4

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