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

Donna Vekic

WOMEN

Age30

BirthplaceOsijek, Croatia

Height1.79m

Weight64kg

Best HandRight

Backhand—

Recent Form

Win Rate:63%

Fatigue:0/100

Inactive:24 Days

Overall

Glicko-21.981

#63RD 65

Elo2.006

#69

Hard

Glicko-21.862

#157

Elo1.780

#130

Clay

Glicko-22.075

#36

Elo1.813

#72

Grass

Glicko-21.748

#35

Elo1.649

#33

Surface Record

HardClayGrass

20261-44-35-2

20259-133-42-4

202414-138-510-4

202317-124-57-3

20229-83-13-4

202112-110-14-3

Recent Matches

Ashlyn KruegerWimbledon - London2026-06-30Grass3-6 7-6(3) 6-4

Alexandra EalaBerlin Tennis Open - Berlin2026-06-17Grass7-5 6-4

Emma RaducanuThe HSBC Championships - London2026-06-14Grass6-0 7-6(6)

Katie BoulterThe HSBC Championships - London2026-06-13Grass6-1 6-3

Marie BouzkovaThe HSBC Championships - London2026-06-12Grass7-6(9) 6-3

Karolina PliskovaThe HSBC Championships - London2026-06-12Grass6-4 4-6 6-3

Mika StojsavljevicThe HSBC Championships - London2026-06-09Grass6-2 6-3

Anna BlinkovaThe HSBC Championships - London2026-06-07Grass6-2 6-4

Carole MonnetThe HSBC Championships - London2026-06-07Grass6-3 6-4

Naomi OsakaFrench Open - Paris2026-05-28Clay7-6(1) 6-4

Alice TubelloFrench Open - Paris2026-05-26Clay6-3 6-2

Maria TimofeevaIstanbul Open - Istanbul2026-05-10Clay6-4 6-2

Guiomar Zuleta De RealesIstanbul Open - Istanbul2026-05-09Clay6-4 6-3

Mia RisticIstanbul Open - Istanbul2026-05-08Clay6-1 6-0

Berfu CengizIstanbul Open - Istanbul2026-05-06Clay6-2 6-4

Aliona FaleiIstanbul Open - Istanbul2026-05-04Clay6-2 6-7(3) 6-4

Leolia JeanjeanMutua Madrid Open - Madrid2026-04-20Clay6-3 3-6 6-4

Anastasia PotapovaUpper Austria Ladies Linz - Linz2026-04-11Clay6-4 6-2

Karolina PliskovaUpper Austria Ladies Linz - Linz2026-04-10Clay7-5 6-4

Katie VolynetsUpper Austria Ladies Linz - Linz2026-04-07Clay6-3 3-6 6-4

Iryna ShymanovichUpper Austria Ladies Linz - Linz2026-04-06Clay4-6 7-6(4) 6-4

Carole MonnetUpper Austria Ladies Linz - Linz2026-04-05Clay6-2 6-4

Madison KeysCredit One Charleston Open - Charleston2026-04-01Clay6-2 6-3

Ajla TomljanovicCredit One Charleston Open - Charleston2026-03-31Clay3-6 6-1 6-4

Ekaterine GorgodzeCredit One Charleston Open - Charleston2026-03-29Clay6-2 6-3

Sachia VickeryCredit One Charleston Open - Charleston2026-03-28Clay6-2 6-2

Lulu SunMiami Open - Miami2026-03-17Hard6-3 6-3

Whitney OsuigweMiami Open - Miami2026-03-16Hard6-4 6-2

Emerson JonesAustin 125 - Austin2026-03-11Hard6-3 7-6(4)

Petra MarcinkoAustin 125 - Austin2026-03-10Hard6-3 6-4

Jessica PegulaBNP Paribas Open - Indian Wells2026-03-07Hard4-6 6-2 6-3

Tereza ValentovaBNP Paribas Open - Indian Wells2026-03-05Hard7-6(4) 7-6(4)

Cristina BucsaMerida Open Akron - Merida2026-02-24Hard6-3 6-2

Elisabetta CocciarettoDubai Duty Free Championships - Dubai2026-02-13Hard0-6 6-3 6-2

Maria Camila Osorio SerranoPhilippine Women's Open - Manila2026-01-31Hard2-6 6-3 7-5

Tatiana ProzorovaPhilippine Women's Open - Manila2026-01-30Hard6-2 6-4

Lin ZhuPhilippine Women's Open - Manila2026-01-29Hard6-4 6-3

Mariia TkachevaPhilippine Women's Open - Manila2026-01-28Hard6-1 6-2

Kyoka OkamuraPhilippine Women's Open - Manila2026-01-27Hard6-2 6-2

Mirra AndreevaAustralian Open - Melbourne2026-01-19Hard4-6 6-3 6-0

Alexandra EalaASB Classic - Auckland2026-01-06Hard4-6 6-4 6-4

Kimberly BirrellChennai Open - Chennai2025-10-31Hard6-4 6-0

Sahaja YamalapalliChennai Open - Chennai2025-10-30Hard6-2 6-2

Vaishnavi AdkarChennai Open - Chennai2025-10-29Hard6-1 6-2

Belinda BencicWuhan Open - Wuhan2025-10-07Hard6-2 6-2

Cristina BucsaChina Open - Beijing2025-09-25Hard6-2 6-4

Cori GauffU.S. Open - New York2025-08-28Hard7-6(5) 6-2

Jessica Bouzas ManeiroU.S. Open - New York2025-08-26Hard3-6 7-5 6-3

Elise MertensAbierto GNP Seguros - Monterrey2025-08-20Hard6-3 6-3

Maria SakkariAbierto GNP Seguros - Monterrey2025-08-18Hard6-2 6-3

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