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

Maja Chwalinska

WOMEN

Age24

BirthplaceDabrowa Gornicza, Poland

Height1.64m

Weight—

Best HandLeft

Backhand—

Recent Form

Win Rate:75%

Fatigue:0/100

Inactive:25 Days

Overall

Glicko-22.022

#35RD 68

Elo2.158

#22

Hard

Glicko-21.937

#79

Elo1.800

#111

Clay

Glicko-22.140

#21

Elo2.033

Grass

Glicko-21.311

#2376

Elo1.470

#1880

Surface Record

HardClayGrass

20262-16-10-1

20250-11-2—

20241-1——

20230-1——

2022—1-11-1

Recent Matches

Mananchaya SawangkaewWimbledon - London2026-06-29Grass2-6 7-5 6-2

Mirra AndreevaFrench Open - Paris2026-06-06Clay6-3 6-2

Diana ShnaiderFrench Open - Paris2026-06-04Clay7-6(4) 6-4

Anna KalinskayaFrench Open - Paris2026-06-03Clay7-6(3) 6-3

Diane ParryFrench Open - Paris2026-06-01Clay6-3 6-2

Maria SakkariFrench Open - Paris2026-05-30Clay1-6 6-3 6-2

Elise MertensFrench Open - Paris2026-05-28Clay6-4 6-0

Qinwen ZhengFrench Open - Paris2026-05-25Clay6-4 6-0

Suzan LamensFrench Open - Paris2026-05-21Clay7-6(4) 7-5

Carole MonnetFrench Open - Paris2026-05-20Clay6-0 6-1

Alice RameFrench Open - Paris2026-05-18Clay6-0 6-3

Federica UrgesiParma Ladies Open - Parma2026-05-11Clay6-3 ret.

Jessika PonchetW75 Saint-Gaudens2026-05-08Clay4-6 6-3 6-2

Lisa ZaarW75 Saint-Gaudens2026-05-07Clay3-6 7-5 6-2

Amandine HesseW75 Saint-Gaudens2026-05-06Clay6-4 6-0

Sinja KrausOeiras Jamor Ladies Open - Oeiras2026-04-19Clay6-1 6-3

Robin MontgomeryOeiras Jamor Ladies Open - Oeiras2026-04-18Clay6-2 6-0

Simona WaltertOeiras Jamor Ladies Open - Oeiras2026-04-17Clay6-1 6-0

Beatriz Haddad MaiaOeiras Jamor Ladies Open - Oeiras2026-04-16Clay6-0 6-4

Kaitlin QuevedoOeiras Jamor Ladies Open - Oeiras2026-04-14Clay3-6 6-2 6-4

Tamara ZidansekDubrovnik Open - Dubrovnik2026-03-23Clay6-3 6-1

Tamara ZidansekMegasaray Hotels Open 3 - Antalya2026-03-12Clay6-7(1) 6-3 7-6(7)

Ada KumruMegasaray Hotels Open 3 - Antalya2026-03-11Clay6-0 6-0

Moyuka UchijimaMegasaray Hotels Open 2 - Antalya2026-03-06Clay2-6 6-3 7-5

Despina PapamichailMegasaray Hotels Open 2 - Antalya2026-03-05Clay6-2 6-0

Adelina LachinovaMegasaray Hotels Open 2 - Antalya2026-03-03Clay6-1 6-3

Darja VidmanovaOeiras 1 Jamor Indoor - Oeiras2026-02-14I.Hard6-4 3-6 7-6(5)

Suzan LamensOeiras 1 Jamor Indoor - Oeiras2026-02-13I.Hard6-1 6-2

Nuria Parrizas-DiazOeiras 1 Jamor Indoor - Oeiras2026-02-11I.Hard6-1 6-1

Noma Akugue NohaOeiras 1 Jamor Indoor - Oeiras2026-02-10I.Hard6-2 3-6 6-1

Emma RaducanuTransylvania Open - Cluj-Napoca2026-02-05I.Hard6-0 6-4

Olga DanilovicTransylvania Open - Cluj-Napoca2026-02-04I.Hard6-1 1-6 6-2

Ana BogdanTransylvania Open - Cluj-Napoca2026-02-02I.Hard6-3 6-2

Leyre Romero GormazTransylvania Open - Cluj-Napoca2026-02-01I.Hard7-6(2) 6-4

Mara GaeTransylvania Open - Cluj-Napoca2026-01-31I.Hard6-2 6-3

Anhelina KalininaAustralian Open - Melbourne2026-01-15Hard5-7 6-2 6-1

Rebeka MasarovaAustralian Open - Melbourne2026-01-14Hard7-6(8) 5-7 6-1

Madison BrengleAustralian Open - Melbourne2026-01-12Hard7-6(3) 6-3

Gabriela Andrea KnutsonASB Classic - Auckland2026-01-04Hard6-3 6-2

Hanyu GuoASB Classic - Auckland2026-01-03Hard6-4 6-0

Luisina GiovanniniQuito Open - Quito2025-12-03Clay6-3 6-4

Tania Varela-AlvaradoQuito Open - Quito2025-12-02Clay6-0 6-0

Varvara LepchenkoArgentina Open - Buenos Aires2025-11-26Clay1-6 7-5 7-6(3)

Jessica PieriArgentina Open - Buenos Aires2025-11-24Clay6-2 6-0

Leolia JeanjeanLP Open by IND - Colina2025-11-21Clay6-4 6-2

Despina PapamichailLP Open by IND - Colina2025-11-19Clay6-3 6-1

Martina TrevisanLP Open by IND - Colina2025-11-18Clay6-2 4-6 6-2

Sara BejlekInternazionali Di Calabria - Rende2025-10-04Clay6-3 6-2

Oksana SelekhmetevaInternazionali Di Calabria - Rende2025-10-03Clay6-3 6-4

Darja SemenistajaInternazionali Di Calabria - Rende2025-10-02Clay6-0 6-4

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