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

Iga Swiatek

WOMEN

Age25

BirthplaceWarsaw, Poland

Height1.76m

Weight—

Best HandRight

Backhand—

Recent Form

Win Rate:63%

Fatigue:0/100

Inactive:20 Days

Overall

Glicko-22.201

#9RD 71

Elo2.256

#11

Hard

Glicko-22.202

Elo2.104

Clay

Glicko-22.271

Elo2.076

Grass

Glicko-21.855

#16

Elo1.825

Surface Record

HardClayGrass

202612-69-42-2

202542-1211-410-1

202436-626-22-1

202342-819-27-1

202248-718-12-1

202120-1112-24-2

Recent Matches

Alexandra EalaWimbledon - London2026-07-04Grass7-6(9) 6-2

Karolina PliskovaWimbledon - London2026-07-02Grass6-1 6-3

Taylor TownsendWimbledon - London2026-06-30Grass6-1 2-6 6-3

Emma NavarroBad Homburg Open - Bad Homburg2026-06-24Grass7-5 2-6 6-3

Marta KostyukFrench Open - Paris2026-05-31Clay7-5 6-1

Magda LinetteFrench Open - Paris2026-05-29Clay6-4 6-4

Sara BejlekFrench Open - Paris2026-05-27Clay6-2 6-3

Emerson JonesFrench Open - Paris2026-05-25Clay6-1 6-2

Elina SvitolinaInternazionali BNL d'Italia - Rome2026-05-14Clay6-4 2-6 6-2

Jessica PegulaInternazionali BNL d'Italia - Rome2026-05-13Clay6-1 6-2

Naomi OsakaInternazionali BNL d'Italia - Rome2026-05-11Clay6-2 6-1

Elisabetta CocciarettoInternazionali BNL d'Italia - Rome2026-05-10Clay6-1 6-0

Caty McNallyInternazionali BNL d'Italia - Rome2026-05-08Clay6-1 6-7(5) 6-3

Ann LiMutua Madrid Open - Madrid2026-04-25Clay7-6(4) 2-6 3-0 ret.

Daria SnigurMutua Madrid Open - Madrid2026-04-23Clay6-1 6-2

Mirra AndreevaPorsche Tennis Grand Prix - Stuttgart2026-04-17Clay3-6 6-4 6-3

Laura SiegemundPorsche Tennis Grand Prix - Stuttgart2026-04-15Clay6-2 6-3

Magda LinetteMiami Open - Miami2026-03-19Hard1-6 7-5 6-3

Elina SvitolinaBNP Paribas Open - Indian Wells2026-03-12Hard6-2 4-6 6-4

Karolina MuchovaBNP Paribas Open - Indian Wells2026-03-11Hard6-2 6-0

Maria SakkariBNP Paribas Open - Indian Wells2026-03-09Hard6-3 6-2

Kayla DayBNP Paribas Open - Indian Wells2026-03-07Hard6-0 7-6(2)

Maria SakkariQatar TotalEnergies Open - Doha2026-02-12Hard2-6 6-4 7-5

Daria KasatkinaQatar TotalEnergies Open - Doha2026-02-11Hard5-7 6-1 6-1

Janice TjenQatar TotalEnergies Open - Doha2026-02-10Hard6-0 6-3

Elena RybakinaAustralian Open - Melbourne2026-01-28Hard7-5 6-1

Maddison InglisAustralian Open - Melbourne2026-01-26Hard6-0 6-3

Anna KalinskayaAustralian Open - Melbourne2026-01-24Hard6-1 1-6 6-1

Marie BouzkovaAustralian Open - Melbourne2026-01-22Hard6-2 6-3

Yue YuanAustralian Open - Melbourne2026-01-19Hard7-6(5) 6-3

Belinda BencicUnited Cup - Australia2026-01-11Hard3-6 6-0 6-3

Cori GauffUnited Cup - Australia2026-01-10Hard6-4 6-2

Maya JointUnited Cup - Australia2026-01-09Hard6-1 6-1

Suzan LamensUnited Cup - Australia2026-01-07Hard6-3 6-2

Eva LysUnited Cup - Australia2026-01-05Hard3-6 6-3 6-4

Gabriela LeeBillie Jean King Cup, PO, Group B2025-11-16I.Hard6-2 6-0

Elyse TseBillie Jean King Cup, PO, Group B2025-11-14I.Hard6-0 6-1

Amanda AnisimovaWTA Finals - Riyadh2025-11-05I.Hard6-7(3) 6-4 6-2

Elena RybakinaWTA Finals - Riyadh2025-11-03I.Hard3-6 6-1 6-0

Madison KeysWTA Finals - Riyadh2025-11-01I.Hard6-1 6-2

Jasmine PaoliniWuhan Open - Wuhan2025-10-10Hard6-1 6-2

Belinda BencicWuhan Open - Wuhan2025-10-09Hard7-6(2) 6-4

Marie BouzkovaWuhan Open - Wuhan2025-10-07Hard6-1 6-1

Emma NavarroChina Open - Beijing2025-10-01Hard6-4 4-6 6-0

Maria Camila Osorio SerranoChina Open - Beijing2025-09-29Hard6-0 ret.

Yue YuanChina Open - Beijing2025-09-27Hard6-0 6-3

Ekaterina AlexandrovaKorea Open - Seoul2025-09-21Hard1-6 7-6(3) 7-5

Maya JointKorea Open - Seoul2025-09-20Hard6-0 6-2

Barbora KrejcikovaKorea Open - Seoul2025-09-20Hard6-0 6-3

Sorana CirsteaKorea Open - Seoul2025-09-18Hard6-3 6-2

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