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

Anastasia Zakharova

WOMEN

Age24

BirthplaceVolgograd, Russia

Height1.70m

Weight—

Best HandRight

Backhand—

Recent Form

Win Rate:63%

Fatigue:29/100

Inactive:6 Days

Overall

Glicko-21.949

#83RD 64

Elo1.990

#78

Hard

Glicko-22.009

#41

Elo1.914

#36

Clay

Glicko-21.844

#212

Elo1.599

#505

Grass

Glicko-21.607

#99

Elo1.565

#83

Surface Record

HardClayGrass

20266-71-41-2

20254-9—2-2

20244-3——

20231-1——

20220-3——

20210-30-1—

Recent Matches

Hanne VandewinkelEnka Open - Istanbul2026-07-18Hard6-3 6-3

Tatiana ProzorovaEnka Open - Istanbul2026-07-17Hard6-3 6-3

Alexandra ShubladzeEnka Open - Istanbul2026-07-16Hard7-6(6) 7-6(2)

Mariia TkachevaEnka Open - Istanbul2026-07-14Hard6-4 3-6 6-4

Karolina MuchovaWimbledon - London2026-06-29Grass6-3 6-2

Tatjana MariaLexus Eastbourne Open - Eastbourne2026-06-24Grass6-2 6-1

Yuliia StarodubtsevaLexus Eastbourne Open - Eastbourne2026-06-23Grass6-4 3-6 6-3

Oksana SelekhmetevaLexus Eastbourne Open - Eastbourne2026-06-21Grass7-6(8) 2-6 7-6(7)

Lilli TaggerLexus Eastbourne Open - Eastbourne2026-06-20Grass6-4 5-7 7-6(7)

Hannah KlugmanLexus Nottingham Open - Nottingham2026-06-13Grass7-6(5) 6-2

Karolina MuchovaFrench Open - Paris2026-05-25Clay7-5 6-2

Daria KasatkinaInternationaux de Strasbourg - Strasbourg2026-05-17Clay6-4 6-2

Elsa JacquemotInternationaux de Strasbourg - Strasbourg2026-05-16Clay4-6 6-3 6-3

Madison KeysTrophee Clarins - Paris2026-05-15Clay6-4 6-1

Katie BoulterTrophee Clarins - Paris2026-05-13Clay6-3 3-6 6-4

Maddison InglisTrophee Clarins - Paris2026-05-11Clay6-2 6-2

Linda NoskovaInternazionali BNL d'Italia - Rome2026-05-07Clay6-4 6-1

Dayana YastremskaInternazionali BNL d'Italia - Rome2026-05-05Clay4-6 7-5 7-6(6)

Marina Bassols RiberaCatalonia Open Solgirones - La Bisbal D'Emporda2026-04-27Clay6-3 6-0

Maria Camila Osorio SerranoMutua Madrid Open - Madrid2026-04-21Clay6-0 6-3

Dayana YastremskaCredit One Charleston Open - Charleston2026-03-30Clay7-5 6-2

Victoria MbokoMiami Open - Miami2026-03-21Hard6-1 7-5

Anna KalinskayaMiami Open - Miami2026-03-20Hard3-6 6-1 7-5

Anna BondarMiami Open - Miami2026-03-19Hard5-7 6-3 6-1

Rebecca SramkovaMiami Open - Miami2026-03-17Hard6-3 6-2

Louisa ChiricoMiami Open - Miami2026-03-16Hard6-2 6-1

Lanlana TararudeeAustin 125 - Austin2026-03-12Hard6-3 6-4

Linda FruhvirtovaAustin 125 - Austin2026-03-11Hard6-0 6-2

Viktorija GolubicAustin 125 - Austin2026-03-10Hard7-5 7-5

Sloane StephensAustin 125 - Austin2026-03-09Hard6-0 6-1

Emma RaducanuBNP Paribas Open - Indian Wells2026-03-06Hard6-1 6-3

Ella SeidelBNP Paribas Open - Indian Wells2026-03-04Hard6-2 6-2

Linda FruhvirtovaBNP Paribas Open - Indian Wells2026-03-03Hard6-4 7-6(2)

Caroline DolehideBNP Paribas Open - Indian Wells2026-03-01Hard7-5 6-1

Ashlyn KruegerATX Open - Austin2026-02-26Hard7-5 6-3

Mary StoianaATX Open - Austin2026-02-24Hard3-6 6-2 6-4

Antonia RuzicDubai Duty Free Championships - Dubai2026-02-17Hard6-1 6-7(2) 6-1

Moyuka UchijimaDubai Duty Free Championships - Dubai2026-02-16Hard6-2 6-4

Elisabetta CocciarettoDubai Duty Free Championships - Dubai2026-02-14Hard6-2 6-7(3) 7-5

Julia GrabherDubai Duty Free Championships - Dubai2026-02-13Hard6-2 6-4

Jelena OstapenkoQatar TotalEnergies Open - Doha2026-02-09Hard6-7(6) 6-3 6-4

Beatriz Haddad MaiaQatar TotalEnergies Open - Doha2026-02-07Hard6-4 6-4

Julia GrabherQatar TotalEnergies Open - Doha2026-02-06Hard6-4 6-4

Anastasia PotapovaTransylvania Open - Cluj-Napoca2026-02-04I.Hard1-6 6-4 6-3

Karolina PliskovaTransylvania Open - Cluj-Napoca2026-02-02I.Hard4-6 6-2 6-2

Jessica PegulaAustralian Open - Melbourne2026-01-19Hard6-2 6-1

Olivia GadeckiBrisbane International - Brisbane2026-01-02Hard6-3 7-5

Elena PridankinaW100 Dubai 12025-12-01Hard7-5 7-6(5)

Alevtina IbragimovaW75 Fujairah 12025-11-27Hard2-6 7-6(10) 7-5

Kajsa Rinaldo PerssonW75 Fujairah 12025-11-26Hard6-1 2-6 6-3

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