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

Iva Jovic

WTA4d inactive32 Low Fatigue

Glicko-22.054

#24 overall·RD 65

Elo2.141#22 overall

Recent Form

40% Win Rate

Hard

Glicko-22.041#22

Elo1.973#19

Clay

Glicko-21.986#72

Elo1.768#118

Grass

Glicko-21.787#17

Elo1.597#47

Recent Matches

Naomi Osaka

French Open - Paris

2026-05-30Clay7-6(5) 6-7(3) 6-4

Emma Navarro

French Open - Paris

2026-05-28Clay6-0 6-3

Alexandra Eala

French Open - Paris

2026-05-26Clay6-4 6-2

Emma Navarro

Internationaux de Strasbourg - Strasbourg

2026-05-20Clay6-4 4-6 6-1

Cori Gauff

Internazionali BNL d'Italia - Rome

2026-05-11Clay5-7 7-5 6-2

Taylor Townsend

Internazionali BNL d'Italia - Rome

2026-05-09Clay7-5 6-2

Mccartney Kessler

Internazionali BNL d'Italia - Rome

2026-05-07Clay7-6(5) 7-6(4)

Leylah Annie Fernandez

Mutua Madrid Open - Madrid

2026-04-25Clay3-6 6-3 6-2

Magda Linette

Mutua Madrid Open - Madrid

2026-04-23Clay6-4 6-1

Greetje Minnen

Billie Jean King Cup, Qualifiers, BEL-USA 3-1

2026-04-11Clay7-5 6-3

Hanne Vandewinkel

Billie Jean King Cup, Qualifiers, BEL-USA 3-1

2026-04-10Clay7-6(3) 6-3

Jessica Pegula

Credit One Charleston Open - Charleston

2026-04-04Clay6-4 5-7 6-3

Anna Kalinskaya

Credit One Charleston Open - Charleston

2026-04-03Clay6-3 6-4

Sofia Kenin

Credit One Charleston Open - Charleston

2026-04-03Clay7-5 7-5

Alycia Parks

Credit One Charleston Open - Charleston

2026-04-01Clay6-3 6-2

Talia Gibson

Miami Open - Miami

2026-03-22Hard6-2 6-2

Paula Badosa Gibert

Miami Open - Miami

2026-03-21Hard6-2 6-1

Maria Camila Osorio Serrano

BNP Paribas Open - Indian Wells

2026-03-06Hard4-6 7-6(4) 6-3

Ajla Tomljanovic

ATX Open - Austin

2026-02-26Hard4-6 6-4 6-4

Anna Blinkova

ATX Open - Austin

2026-02-24Hard6-3 6-4

Jessica Pegula

Dubai Duty Free Championships - Dubai

2026-02-18Hard6-4 6-2

Diana Shnaider

Dubai Duty Free Championships - Dubai

2026-02-17Hard6-4 1-6 6-0

Kamilla Rakhimova

Dubai Duty Free Championships - Dubai

2026-02-16Hard6-1 1-6 6-1

Aryna Sabalenka

Australian Open - Melbourne

2026-01-27Hard6-3 6-0

Yulia Putintseva

Australian Open - Melbourne

2026-01-25Hard6-0 6-1

Jasmine Paolini

Australian Open - Melbourne

2026-01-23Hard6-2 7-6(3)

Priscilla Hon

Australian Open - Melbourne

2026-01-21Hard6-1 6-2

Katie Volynets

Australian Open - Melbourne

2026-01-19Hard6-2 6-3

Elisabetta Cocciaretto

Hobart International - Hobart

2026-01-17Hard6-4 6-4

Taylah Preston

Hobart International - Hobart

2026-01-16Hard4-6 6-4 6-1

Magda Linette

Hobart International - Hobart

2026-01-15Hard6-3 6-7(5) 6-2

Renata Zarazua

Hobart International - Hobart

2026-01-14Hard6-1 6-2

Janice Tjen

Hobart International - Hobart

2026-01-13Hard6-0 6-1

Elina Svitolina

ASB Classic - Auckland

2026-01-10Hard7-6(5) 6-2

Sofia Costoulas

ASB Classic - Auckland

2026-01-09Hard6-2 7-6(6)

Sara Bejlek

ASB Classic - Auckland

2026-01-07Hard7-6(3) 6-4

Gabriela Andrea Knutson

ASB Classic - Auckland

2026-01-05Hard4-6 6-1 6-0

Marina Stakusic

Austin 125 - Austin

2025-11-08Hard6-3 6-4

Mary Stoiana

Austin 125 - Austin

2025-11-07Hard6-0 6-1

Anastasia Gasanova

Austin 125 - Austin

2025-11-06Hard6-1 4-6 6-4

Anna-Lena Friedsam

Austin 125 - Austin

2025-11-04Hard6-2 6-1

Katerina Siniakova

Wuhan Open - Wuhan

2025-10-09Hard7-5 6-3

Jessica Bouzas Maneiro

Wuhan Open - Wuhan

2025-10-08Hard6-4 6-4

Varvara Gracheva

Wuhan Open - Wuhan

2025-10-05Hard3-6 6-4 6-2

Kamilla Rakhimova

Wuhan Open - Wuhan

2025-10-04Hard6-3 6-4

Lulu Sun

Suzhou WTA 125 - Suzhou

2025-10-01Hard6-4 7-6(3)

Eva Lys

China Open - Beijing

2025-09-26Hard6-3 4-6 7-5

Emiliana Arango

Guadalajara Open Akron - Guadalajara

2025-09-14Hard6-4 6-1

Nikola Bartunkova

Guadalajara Open Akron - Guadalajara

2025-09-13Hard6-3 6-7(5) 6-3

Victoria Jimenez Kasintseva

Guadalajara Open Akron - Guadalajara

2025-09-12Hard6-3 3-6 7-6(6)

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