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

Liudmila Samsonova

WOMEN

Age27

BirthplaceOlenegorsk, Russia

Height1.82m

Weight—

Best HandRight

Backhand—

Recent Form

Win Rate:38%

Fatigue:0/100

Inactive:20 Days

Overall

Glicko-21.943

#86RD 72

Elo1.997

#75

Hard

Glicko-21.861

#159

Elo1.744

#179

Clay

Glicko-21.950

#100

Elo1.772

#118

Grass

Glicko-21.694

#54

Elo1.690

#26

Surface Record

HardClayGrass

20264-83-53-4

202515-158-57-3

202412-156-58-3

202326-164-44-4

202225-93-41-3

202114-122-48-1

Recent Matches

Marie BouzkovaWimbledon - London2026-07-04Grass4-6 7-6(3) 6-4

Diana ShnaiderWimbledon - London2026-07-02Grass6-4 4-6 6-2

Polina KudermetovaWimbledon - London2026-06-30Grass6-3 6-3

Elina SvitolinaBad Homburg Open - Bad Homburg2026-06-23Grass3-6 6-3 6-2

Katerina SiniakovaBad Homburg Open - Bad Homburg2026-06-21Grass6-3 7-5

Elise MertensBerlin Tennis Open - Berlin2026-06-15Grass1-6 6-3 6-0

Harriet DartThe HSBC Championships - London2026-06-08Grass5-7 6-4 6-3

Jil TeichmannFrench Open - Paris2026-05-25Clay6-4 6-4

Daria KasatkinaInternationaux de Strasbourg - Strasbourg2026-05-18Clay7-5 6-3

Anastasia PotapovaInternazionali BNL d'Italia - Rome2026-05-10Clay6-3 6-2

Ann LiInternazionali BNL d'Italia - Rome2026-05-08Clay6-4 6-3

Janice TjenMutua Madrid Open - Madrid2026-04-24Clay6-2 6-1

Cori GauffPorsche Tennis Grand Prix - Stuttgart2026-04-16Clay7-5 6-1

Antonia RuzicPorsche Tennis Grand Prix - Stuttgart2026-04-13Clay6-0 6-4

Lilli TaggerUpper Austria Ladies Linz - Linz2026-04-09Clay6-2 7-6(11)

Hailey BaptisteMiami Open - Miami2026-03-20Hard6-3 7-5

Ashlyn KruegerBNP Paribas Open - Indian Wells2026-03-07Hard3-6 7-5 6-2

Leylah Annie FernandezDubai Duty Free Championships - Dubai2026-02-15Hard5-7 7-5 6-3

Magdalena FrechQatar TotalEnergies Open - Doha2026-02-08Hard6-3 4-6 7-6(7)

Hailey BaptisteMubadala Abu Dhabi Open - Abu Dhabi2026-02-05Hard6-2 4-6 6-4

Janice TjenMubadala Abu Dhabi Open - Abu Dhabi2026-02-03Hard6-2 6-2

Sofia KeninMubadala Abu Dhabi Open - Abu Dhabi2026-02-01Hard6-4 6-0

Laura SiegemundAustralian Open - Melbourne2026-01-20Hard0-6 7-5 6-4

Marketa VondrousovaAdelaide International - Adelaide2026-01-13Hard6-1 4-6 6-2

Jessica PegulaBrisbane International - Brisbane2026-01-09Hard6-3 7-6(3)

Aliaksandra SasnovichBrisbane International - Brisbane2026-01-08Hard6-4 6-4

Emerson JonesBrisbane International - Brisbane2026-01-07Hard6-4 6-1

Mccartney KesslerNingbo Open - Ningbo2025-10-16Hard7-6(5) 6-1

Hanyu GuoNingbo Open - Ningbo2025-10-14Hard6-2 6-4

Aryna SabalenkaWuhan Open - Wuhan2025-10-09Hard6-3 6-2

Sofia KeninWuhan Open - Wuhan2025-10-08Hard3-6 6-3 6-1

Emiliana ArangoWuhan Open - Wuhan2025-10-07Hard6-1 7-5

Lois BoissonChina Open - Beijing2025-09-27Hard6-3 6-4

Priscilla HonU.S. Open - New York2025-08-27Hard4-6 6-3 6-2

Yue YuanU.S. Open - New York2025-08-25Hard2-6 6-4 6-4

Sorana CirsteaTennis in the Land - Cleveland2025-08-21Hard6-4 6-1

Yafan WangTennis in the Land - Cleveland2025-08-20Hard6-2 6-4

Caroline DolehideTennis in the Land - Cleveland2025-08-18Hard6-4 7-6(2)

Taylor TownsendCincinnati Open - Cincinnati2025-08-09Hard6-2 6-4

Naomi OsakaOmnium Banque Nationale - Montreal2025-07-30Hard4-6 7-6(6) 6-3

Iga SwiatekWimbledon - London2025-07-09Grass6-2 7-5

Jessica Bouzas ManeiroWimbledon - London2025-07-07Grass7-5 7-5

Daria KasatkinaWimbledon - London2025-07-05Grass6-2 6-3

Yuliia StarodubtsevaWimbledon - London2025-07-03Grass6-2 6-1

Maya JointWimbledon - London2025-07-01Grass6-3 6-2

Xinyu WangBerlin Ladies Open - Berlin2025-06-21Grass6-4 6-1

Amanda AnisimovaBerlin Ladies Open - Berlin2025-06-20Grass6-1 6-1

Jessica PegulaBerlin Ladies Open - Berlin2025-06-18Grass6-7(8) 7-5 7-6(5)

Naomi OsakaBerlin Ladies Open - Berlin2025-06-17Grass3-6 7-6(3) 6-4

Carson BranstineLibema Open - 's-Hertogenbosch2025-06-11Grass6-4 5-7 6-1

Simulate a match with SamsonovaGet win probability, VOPO edge vs Sharp Market odds, and Glicko-2 breakdown.

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