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

Peyton Stearns

WOMEN

Age24

BirthplaceCincinnati, Ohio

Height1.73m

Weight—

Best HandRight

Backhand—

Recent Form

Win Rate:50%

Fatigue:0/100

Inactive:25 Days

Overall

Glicko-21.965

#71RD 72

Elo2.001

#74

Hard

Glicko-21.943

#75

Elo1.842

#75

Clay

Glicko-22.033

#46

Elo1.835

#54

Grass

Glicko-21.419

#2256

Elo1.408

#2008

Surface Record

HardClayGrass

202610-76-50-1

20257-158-41-2

202414-147-41-2

20237-118-30-1

20220-2——

Recent Matches

Nikola BartunkovaWimbledon - London2026-06-29Grass6-4 3-6 7-5

Kimberly BirrellLexus Eastbourne Open - Eastbourne2026-06-21Grass7-5 6-0

Emily AppletonLexus Eastbourne Open - Eastbourne2026-06-20Grass7-5 6-3

Belinda BencicFrench Open - Paris2026-05-29Clay6-3 6-3

Daria SnigurFrench Open - Paris2026-05-27Clay6-4 6-0

Sofia KeninFrench Open - Paris2026-05-24Clay6-3 6-3

Daria KasatkinaInternationaux de Strasbourg - Strasbourg2026-05-19Clay6-1 6-3

Maria SakkariInternationaux de Strasbourg - Strasbourg2026-05-17Clay6-3 6-1

Madison KeysInternazionali BNL d'Italia - Rome2026-05-08Clay4-6 6-4 6-2

Janice TjenInternazionali BNL d'Italia - Rome2026-05-06Clay6-4 6-4

Aliona BolsovaCatalonia Open Solgirones - La Bisbal D'Emporda2026-04-28Clay6-4 5-7 7-6(4)

Aryna SabalenkaMutua Madrid Open - Madrid2026-04-23Clay7-5 6-3

Lois BoissonMutua Madrid Open - Madrid2026-04-21Clay6-1 6-3

Mccartney KesslerCredit One Charleston Open - Charleston2026-04-02Clay6-0 3-6 6-4

Ashlyn KruegerCredit One Charleston Open - Charleston2026-04-01Clay7-6(8) 7-5

Jaqueline CristianMiami Open - Miami2026-03-20Hard6-4 7-5

Viktorija GolubicMiami Open - Miami2026-03-19Hard7-6(6) 6-4

Solana SierraBNP Paribas Open - Indian Wells2026-03-05Hard7-5 7-5

Taylor TownsendATX Open - Austin2026-03-01Hard7-6(8) 7-5

Kimberly BirrellATX Open - Austin2026-02-28Hard6-3 3-6 6-2

Oksana SelekhmetevaATX Open - Austin2026-02-27Hard6-1 5-7 7-5

Kaja JuvanATX Open - Austin2026-02-26Hard6-0 6-2

Francesca JonesATX Open - Austin2026-02-24Hard3-6 6-3 6-2

Clara TausonDubai Duty Free Championships - Dubai2026-02-17Hard6-2 6-4

Magdalena FrechDubai Duty Free Championships - Dubai2026-02-15Hard6-4 6-2

Elena Gabriela RuseDubai Duty Free Championships - Dubai2026-02-14Hard6-2 4-6 6-4

Vera ZvonarevaDubai Duty Free Championships - Dubai2026-02-13Hard6-4 3-6 6-4

Vera ZvonarevaQatar TotalEnergies Open - Doha2026-02-08Hard2-6 6-2 6-3

Amanda AnisimovaAustralian Open - Melbourne2026-01-24Hard6-1 6-4

Petra MarcinkoAustralian Open - Melbourne2026-01-22Hard6-2 7-5

Sofia KeninAustralian Open - Melbourne2026-01-19Hard6-3 6-2

Olga DanilovicHobart International - Hobart2026-01-14Hard7-6(2) 6-1

Barbora KrejcikovaHobart International - Hobart2026-01-13Hard6-4 1-6 7-6(4)

Kaitlin QuevedoASB Classic - Auckland2026-01-05Hard6-2 7-5

Katie VolynetsChina Open - Beijing2025-09-24Hard6-4 2-6 6-3

Magdalena FrechU.S. Open - New York2025-08-28Hard6-7(6) 6-3 6-2

Darja SemenistajaU.S. Open - New York2025-08-25Hard7-5 6-0

Yafan WangTennis in the Land - Cleveland2025-08-18Hard6-4 3-6 6-3

Anna KalinskayaCincinnati Open - Cincinnati2025-08-09Hard7-6(4) 4-6 6-1

Yafan WangCincinnati Open - Cincinnati2025-08-07Hard6-4 6-3

Emma RaducanuOmnium Banque Nationale - Montreal2025-07-30Hard6-2 6-4

Venus WilliamsMubadala Citi DC Open - Washington2025-07-22Hard6-3 6-4

Laura SiegemundWimbledon - London2025-06-30Grass6-4 6-2

Kamilla RakhimovaRothesay International - Eastbourne2025-06-25Grass6-3 6-4

Mingge XuRothesay International - Eastbourne2025-06-24Grass6-3 6-4

Eva LysFrench Open - Paris2025-05-25Clay6-0 6-3

Jasmine PaoliniInternazionali BNL d'Italia - Rome2025-05-15Clay7-5 6-1

Elina SvitolinaInternazionali BNL d'Italia - Rome2025-05-13Clay6-2 4-6 7-6(4)

Naomi OsakaInternazionali BNL d'Italia - Rome2025-05-12Clay6-4 3-6 7-6(4)

Madison KeysInternazionali BNL d'Italia - Rome2025-05-10Clay2-6 6-2 7-6(3)

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