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

Naomi Osaka

WOMENHot

Age28

BirthplaceOsaka, Japan

Height1.80m

Weight69kg

Best HandRight

Backhand—

Recent Form

Win Rate:75%

Fatigue:0/100

Inactive:17 Days

Overall

Glicko-22.193

#10RD 71

Elo2.310

#10

Hard

Glicko-22.107

#14

Elo2.038

#12

Clay

Glicko-22.239

Elo1.877

#32

Grass

Glicko-21.880

#12

Elo1.710

#19

Surface Record

HardClayGrass

20265-37-38-2

202523-93-33-3

202414-95-53-3

202213-71-2—

202116-42-2—

202016-20-1—

Recent Matches

Karolina MuchovaWimbledon - London2026-07-07Grass7-6(4) 6-4

Aryna SabalenkaWimbledon - London2026-07-05Grass6-2 7-6(2)

Daria KasatkinaWimbledon - London2026-07-03Grass6-1 6-3

Anastasia GasanovaWimbledon - London2026-07-01Grass6-3 6-2

Elsa JacquemotWimbledon - London2026-06-29Grass6-1 7-5

Karolina MuchovaBad Homburg Open - Bad Homburg2026-06-27Grass6-1 1-0 ret.

Xinyu WangBad Homburg Open - Bad Homburg2026-06-26Grass6-3 6-3

Ekaterina AlexandrovaBad Homburg Open - Bad Homburg2026-06-25Grass6-2 6-2

Elise MertensBad Homburg Open - Bad Homburg2026-06-23Grass6-3 6-3

Magdalena FrechBad Homburg Open - Bad Homburg2026-06-22Grass6-4 6-1

Aryna SabalenkaFrench Open - Paris2026-06-01Clay7-5 6-3

Iva JovicFrench Open - Paris2026-05-30Clay7-6(5) 6-7(3) 6-4

Donna VekicFrench Open - Paris2026-05-28Clay7-6(1) 6-4

Laura SiegemundFrench Open - Paris2026-05-26Clay6-3 7-6(3)

Iga SwiatekInternazionali BNL d'Italia - Rome2026-05-11Clay6-2 6-1

Diana ShnaiderInternazionali BNL d'Italia - Rome2026-05-10Clay6-1 6-2

Eva LysInternazionali BNL d'Italia - Rome2026-05-08Clay6-4 4-6 6-3

Aryna SabalenkaMutua Madrid Open - Madrid2026-04-27Clay6-7(1) 6-3 6-2

Anhelina KalininaMutua Madrid Open - Madrid2026-04-25Clay6-1 6-3

Maria Camila Osorio SerranoMutua Madrid Open - Madrid2026-04-23Clay6-2 7-5

Talia GibsonMiami Open - Miami2026-03-21Hard7-5 6-4

Aryna SabalenkaBNP Paribas Open - Indian Wells2026-03-10Hard6-2 6-4

Maria Camila Osorio SerranoBNP Paribas Open - Indian Wells2026-03-08Hard6-1 3-6 6-1

Victoria Jimenez KasintsevaBNP Paribas Open - Indian Wells2026-03-06Hard7-5 6-2

Sorana CirsteaAustralian Open - Melbourne2026-01-22Hard6-3 4-6 6-2

Antonia RuzicAustralian Open - Melbourne2026-01-20Hard6-3 3-6 6-4

Katie SwanUnited Cup - Australia2026-01-04Hard7-6(4) 6-1

Maria SakkariUnited Cup - Australia2026-01-02Hard6-4 6-2

Suzan LamensJapan Open - Osaka2025-10-15Hard7-6(6) 3-6 6-2

Wakana SonobeJapan Open - Osaka2025-10-13Hard6-0 6-4

Linda NoskovaWuhan Open - Wuhan2025-10-08Hard7-6(2) 6-3

Leylah Annie FernandezWuhan Open - Wuhan2025-10-07Hard4-6 7-5 6-3

Aliaksandra SasnovichChina Open - Beijing2025-09-27Hard1-6 6-4 6-2

Amanda AnisimovaU.S. Open - New York2025-09-04Hard6-7(4) 7-6(3) 6-3

Karolina MuchovaU.S. Open - New York2025-09-03Hard6-4 7-6(3)

Cori GauffU.S. Open - New York2025-09-01Hard6-3 6-2

Daria KasatkinaU.S. Open - New York2025-08-30Hard6-0 4-6 6-3

Hailey BaptisteU.S. Open - New York2025-08-28Hard6-3 6-1

Greetje MinnenU.S. Open - New York2025-08-26Hard6-3 6-4

Victoria MbokoOmnium Banque Nationale - Montreal2025-08-07Hard2-6 6-4 6-1

Clara TausonOmnium Banque Nationale - Montreal2025-08-06Hard6-2 7-6(7)

Elina SvitolinaOmnium Banque Nationale - Montreal2025-08-05Hard6-2 6-2

Anastasija SevastovaOmnium Banque Nationale - Montreal2025-08-03Hard6-1 6-0

Jelena OstapenkoOmnium Banque Nationale - Montreal2025-08-01Hard6-2 6-4

Liudmila SamsonovaOmnium Banque Nationale - Montreal2025-07-30Hard4-6 7-6(6) 6-3

Ariana ArseneaultOmnium Banque Nationale - Montreal2025-07-28Hard6-4 6-2

Emma RaducanuMubadala Citi DC Open - Washington2025-07-24Hard6-4 6-2

Yulia PutintsevaMubadala Citi DC Open - Washington2025-07-22Hard6-2 7-5

Anastasia PavlyuchenkovaWimbledon - London2025-07-04Grass3-6 6-4 6-4

Katerina SiniakovaWimbledon - London2025-07-02Grass6-3 6-2

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