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

Katerina Siniakova

WOMEN

Age30

BirthplaceHradec Kralove, Czech Republic

Height1.74m

Weight69kg

Best HandRight

Backhand—

Recent Form

Win Rate:50%

Fatigue:0/100

Inactive:25 Days

Overall

Glicko-22.013

#40RD 70

Elo2.054

#45

Hard

Glicko-22.010

#39

Elo1.908

#39

Clay

Glicko-21.949

#103

Elo1.691

#252

Grass

Glicko-21.732

#40

Elo1.611

#49

Surface Record

HardClayGrass

20266-64-42-3

202514-130-43-4

202417-164-65-2

202315-160-16-2

202212-116-50-3

20219-127-36-2

Recent Matches

Nikola BartunkovaWimbledon - London2026-07-01Grass6-2 6-4

Qinwen ZhengWimbledon - London2026-06-29Grass6-4 6-4

Liudmila SamsonovaBad Homburg Open - Bad Homburg2026-06-21Grass6-3 7-5

Jessica PegulaBerlin Tennis Open - Berlin2026-06-17Grass6-2 6-4

Rebeka MasarovaBerlin Tennis Open - Berlin2026-06-16Grass6-2 6-4

Lin ZhuBerlin Tennis Open - Berlin2026-06-15Grass6-4 6-2

Yue YuanBerlin Tennis Open - Berlin2026-06-13Grass6-4 6-2

Victoria MbokoFrench Open - Paris2026-05-28Clay5-7 6-4 6-2

Simona WaltertFrench Open - Paris2026-05-26Clay6-4 7-6(4)

Marie BouzkovaInternationaux de Strasbourg - Strasbourg2026-05-18Clay7-6(3) 6-3

Anna KalinskayaInternazionali BNL d'Italia - Rome2026-05-07Clay4-6 7-6(4) 7-5

Lois BoissonInternazionali BNL d'Italia - Rome2026-05-06Clay6-2 6-3

Caty McNallyMutua Madrid Open - Madrid2026-04-26Clay6-3 2-6 7-6(2)

Anna BlinkovaMutua Madrid Open - Madrid2026-04-24Clay6-2 6-2

Elvina KalievaMutua Madrid Open - Madrid2026-04-22Clay6-3 6-4

Maria Camila Osorio SerranoMiami Open - Miami2026-03-17Hard6-1 6-4

Elina SvitolinaBNP Paribas Open - Indian Wells2026-03-11Hard6-1 1-1 ret.

Mirra AndreevaBNP Paribas Open - Indian Wells2026-03-09Hard4-6 7-6(5) 6-3

Leylah Annie FernandezBNP Paribas Open - Indian Wells2026-03-07Hard5-7 6-4 7-6(1)

Sofia KeninBNP Paribas Open - Indian Wells2026-03-05Hard1-6 6-4 6-1

Paula Badosa GibertDubai Duty Free Championships - Dubai2026-02-16Hard6-3 7-5

Maria Camila Osorio SerranoQatar TotalEnergies Open - Doha2026-02-10Hard6-2 5-7 6-3

Clara TausonQatar TotalEnergies Open - Doha2026-02-09Hard6-4 6-1

Amanda AnisimovaAustralian Open - Melbourne2026-01-22Hard6-1 6-4

Panna UdvardyAustralian Open - Melbourne2026-01-20Hard6-1 6-2

Diana ShnaiderAdelaide International - Adelaide2026-01-14Hard6-1 2-6 7-5

Dayana YastremskaAdelaide International - Adelaide2026-01-13Hard6-0 6-1

Elena Gabriela RuseAdelaide International - Adelaide2026-01-11Hard3-6 6-3 6-2

Emilie ChenAdelaide International - Adelaide2026-01-10Hard6-2 6-0

Jessica PegulaWuhan Open - Wuhan2025-10-10Hard2-6 6-0 6-3

Iva JovicWuhan Open - Wuhan2025-10-09Hard7-5 6-3

Maya JointWuhan Open - Wuhan2025-10-08Hard6-3 6-1

Diana ShnaiderWuhan Open - Wuhan2025-10-06Hard6-4 6-4

Yafan WangWuhan Open - Wuhan2025-10-05Hard6-3 7-5

Caty McNallyWuhan Open - Wuhan2025-10-04Hard7-5 6-3

Anastasia PotapovaChina Open - Beijing2025-09-25Hard6-3 6-4

Suzan LamensKorea Open - Seoul2025-09-20Hard6-1 7-5

Ekaterina AlexandrovaKorea Open - Seoul2025-09-20Hard6-4 6-2

Daria KasatkinaKorea Open - Seoul2025-09-18Hard7-6(2) 6-2

Sohyun ParkKorea Open - Seoul2025-09-15Hard6-2 6-2

Talia GibsonKorea Open - Seoul2025-09-14Hard6-1 6-2

Astra SharmaKorea Open - Seoul2025-09-13Hard6-4 6-4

Storm HunterGuadalajara Open Akron - Guadalajara2025-09-09Hard7-6(5) 4-6 6-3

Hailey BaptisteU.S. Open - New York2025-08-26Hard7-5 6-3

Viktorija GolubicPolish Open - Warsaw2025-08-02Hard6-1 6-2

Victoria Jimenez KasintsevaPolish Open - Warsaw2025-08-01Hard6-4 6-0

Ella SeidelPolish Open - Warsaw2025-07-31Hard6-3 1-0 ret.

Alina CharaevaPolish Open - Warsaw2025-07-30Hard6-3 6-3

Lanlana TararudeePolish Open - Warsaw2025-07-29Hard6-1 1-6 7-5

Linda NoskovaPrague Open - Prague2025-07-24Hard6-2 4-6 6-3

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