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

Dayana Yastremska

WOMEN

Age26

BirthplaceOdessa, Ukraine

Height1.75m

Weight—

Best HandRight

Backhand—

Recent Form

Win Rate:50%

Fatigue:0/100

Inactive:23 Days

Overall

Glicko-21.954

#80RD 69

Elo1.945

#105

Hard

Glicko-21.893

#122

Elo1.794

#117

Clay

Glicko-21.987

#72

Elo1.773

#117

Grass

Glicko-21.587

#108

Elo1.598

#58

Surface Record

HardClayGrass

20266-92-53-3

202516-146-58-3

20248-135-53-2

20235-111-6—

20228-113-32-4

20215-112-1—

Recent Matches

Jessica Bouzas ManeiroWimbledon - London2026-07-01Grass6-3 6-7(1) 6-2

Aoi ItoWimbledon - London2026-06-29Grass7-6(1) 4-6 7-5

Tatjana MariaLexus Nottingham Open - Nottingham2026-06-17Grass6-1 6-2

Alicia DudeneyLexus Nottingham Open - Nottingham2026-06-16Grass6-4 7-6(2)

Ajla TomljanovicLibema Open - 's-Hertogenbosch2026-06-12Grass4-6 6-4 7-5

Sara BejlekLibema Open - 's-Hertogenbosch2026-06-09Grass6-1 6-2

Jasmine PaoliniFrench Open - Paris2026-05-25Clay7-5 6-3

Jessica Bouzas ManeiroParma Ladies Open - Parma2026-05-16Clay7-6(5) 6-7(4) 7-6(5)

Barbora KrejcikovaParma Ladies Open - Parma2026-05-16Clay6-3 6-3

Solana SierraParma Ladies Open - Parma2026-05-14Clay6-3 7-5

Hanne VandewinkelParma Ladies Open - Parma2026-05-13Clay6-3 6-2

Victoria BosioParma Ladies Open - Parma2026-05-12Clay7-6(3) 6-3

Anastasia ZakharovaInternazionali BNL d'Italia - Rome2026-05-05Clay4-6 7-5 7-6(6)

Solana SierraMutua Madrid Open - Madrid2026-04-22Clay7-6(10) 7-6(8)

Elena Gabriela RuseUpper Austria Ladies Linz - Linz2026-04-08Clay4-6 6-4 6-4

Ann LiUpper Austria Ladies Linz - Linz2026-04-07Clay7-5 4-6 6-3

Belinda BencicCredit One Charleston Open - Charleston2026-04-01Clay6-2 6-7(5) 6-3

Anastasia ZakharovaCredit One Charleston Open - Charleston2026-03-30Clay7-5 6-2

Jelena OstapenkoMiami Open - Miami2026-03-20Hard6-4 6-4

Ashlyn KruegerMiami Open - Miami2026-03-19Hard2-6 6-4 7-5

Alexandra EalaBNP Paribas Open - Indian Wells2026-03-06Hard7-5 4-6 7-5

Shuai ZhangBNP Paribas Open - Indian Wells2026-03-04Hard6-3 6-2

Marina StakusicMerida Open Akron - Merida2026-02-23Hard6-4 6-3

Janice TjenDubai Duty Free Championships - Dubai2026-02-15Hard6-4 6-1

Elina SvitolinaQatar TotalEnergies Open - Doha2026-02-10Hard6-1 6-4

Cristina BucsaQatar TotalEnergies Open - Doha2026-02-09Hard6-4 4-6 7-6(5)

Ekaterina AlexandrovaMubadala Abu Dhabi Open - Abu Dhabi2026-02-04Hard6-3 6-0

Beatriz Haddad MaiaMubadala Abu Dhabi Open - Abu Dhabi2026-02-02Hard6-2 7-5

Elena Gabriela RuseAustralian Open - Melbourne2026-01-18Hard6-4 7-5

Katerina SiniakovaAdelaide International - Adelaide2026-01-13Hard6-0 6-1

Jessica PegulaBrisbane International - Brisbane2026-01-08Hard5-7 6-2 6-3

Leylah Annie FernandezBrisbane International - Brisbane2026-01-07Hard6-1 6-2

Talia GibsonBrisbane International - Brisbane2026-01-05Hard7-6(3) 7-6(4)

Diana ShnaiderToray Pan Pacific Open - Tokyo2025-10-21Hard6-3 6-1

Elena RybakinaNingbo Open - Ningbo2025-10-16Hard6-4 6-7(6) 6-3

Victoria MbokoNingbo Open - Ningbo2025-10-14Hard6-3 7-6(3)

Laura SiegemundWuhan Open - Wuhan2025-10-06Hard7-5 4-6 4-1 ret.

Jessica Bouzas ManeiroChina Open - Beijing2025-09-27Hard7-5 6-4

Anastasia PavlyuchenkovaU.S. Open - New York2025-08-25Hard6-7(5) 7-6(5) 6-4

Viktoriya TomovaCincinnati Open - Cincinnati2025-08-10Hard6-4 2-6 6-2

Elena RybakinaOmnium Banque Nationale - Montreal2025-08-02Hard5-7 6-2 7-5

Emma NavarroOmnium Banque Nationale - Montreal2025-07-31Hard7-5 6-4

Maria Camila Osorio SerranoOmnium Banque Nationale - Montreal2025-07-29Hard3-6 7-6(5) 6-2

Lois BoissonEuropean Open - Hamburg2025-07-19Clay6-1 7-6(5)

Dalma GalfiEuropean Open - Hamburg2025-07-18Clay7-6(1) 3-6 6-2

Diane ParryEuropean Open - Hamburg2025-07-17Clay6-1 6-4

Jule NiemeierEuropean Open - Hamburg2025-07-16Clay6-4 6-3

Jessica Bouzas ManeiroWimbledon - London2025-07-05Grass6-1 2-6 6-3

Anastasia ZakharovaWimbledon - London2025-07-03Grass5-7 7-5 7-6(8)

Cori GauffWimbledon - London2025-07-01Grass7-6(3) 6-1

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