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

Aliaksandra Sasnovich

WTA12d inactive

Glicko-21.962

#70 overall·RD 65

Elo1.963#88 overall

Recent Form

60% Win Rate

Hard

Glicko-21.965#52

Elo1.857#61

Clay

Glicko-21.886#158

Elo1.735#155

Grass

Glicko-21.709#42

Elo1.629#33

Recent Matches

Marina Bassols Ribera

French Open - Paris

2026-05-22Clay7-6(4) 7-5

Oceane Dodin

French Open - Paris

2026-05-20Clay6-1 6-0

Whitney Osuigwe

French Open - Paris

2026-05-18Clay6-4 6-3

Alina Charaeva

Trophee Clarins - Paris

2026-05-15Clay6-4 6-0

Anna Blinkova

Trophee Clarins - Paris

2026-05-14Clay7-5 6-4

Talia Gibson

Trophee Clarins - Paris

2026-05-11Clay6-4 6-0

Julia Grabher

Internazionali BNL d'Italia - Rome

2026-05-04Clay4-6 6-2 6-4

Alina Charaeva

Mutua Madrid Open - Madrid

2026-04-20Clay6-3 6-4

Karolina Muchova

Porsche Tennis Grand Prix - Stuttgart

2026-04-14Clay6-2 6-4

Oceane Dodin

Porsche Tennis Grand Prix - Stuttgart

2026-04-12Clay6-1 6-1

Julia Stusek

Porsche Tennis Grand Prix - Stuttgart

2026-04-11Clay6-1 6-4

Karolina Pliskova

Upper Austria Ladies Linz - Linz

2026-04-07Clay6-4 6-4

Anhelina Kalinina

Upper Austria Ladies Linz - Linz

2026-04-06Clay6-3 6-2

Linda Fruhvirtova

Upper Austria Ladies Linz - Linz

2026-04-05Clay6-0 6-1

Paula Badosa Gibert

Miami Open - Miami

2026-03-19Hard7-5 6-3

Renata Zarazua

Miami Open - Miami

2026-03-17Hard6-3 6-4

Ayla Aksu

Miami Open - Miami

2026-03-16Hard6-4 6-4

Kayla Day

BNP Paribas Open - Indian Wells

2026-03-01Hard6-2 7-5

Sorana Cirstea

Dubai Duty Free Championships - Dubai

2026-02-16Hard6-3 7-6(6)

Sonay Kartal

Dubai Duty Free Championships - Dubai

2026-02-14Hard6-4 6-3

Petra Marcinko

Dubai Duty Free Championships - Dubai

2026-02-13Hard6-4 6-4

Varvara Gracheva

Qatar TotalEnergies Open - Doha

2026-02-06Hard6-4 6-0

Alexandra Eala

Mubadala Abu Dhabi Open - Abu Dhabi

2026-02-04Hard2-6 6-4 7-6(5)

Paula Badosa Gibert

Mubadala Abu Dhabi Open - Abu Dhabi

2026-02-02Hard6-4 3-6 6-1

Sonay Kartal

Mubadala Abu Dhabi Open - Abu Dhabi

2026-02-01Hard6-2 6-4

Priscilla Hon

Mubadala Abu Dhabi Open - Abu Dhabi

2026-01-31Hard7-5 6-7(3) 6-3

Jasmine Paolini

Australian Open - Melbourne

2026-01-18Hard6-1 6-2

Daria Snigur

Australian Open - Melbourne

2026-01-15Hard6-2 0-6 6-2

Kathinka Von Deichmann

Australian Open - Melbourne

2026-01-14Hard6-3 7-6(4)

Ksenia Efremova

Australian Open - Melbourne

2026-01-12Hard6-3 6-1

Liudmila Samsonova