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

Sara Bejlek

WOMEN44Hot

Age20

Birthplace—

Height—

Weight—

Best HandLeft

Backhand—

Recent Form

Win Rate:63%

Fatigue:44/100

Inactive:1 Days

Overall

Glicko-21.982

#62RD 72

Elo2.008

#66

Hard

Glicko-22.058

#23

Elo1.862

#60

Clay

Glicko-21.901

#145

Elo1.867

#34

Grass

Glicko-21.442

#2225

Elo1.401

#2014

Surface Record

HardClayGrass

20269-42-41-3

20252-21-1—

20240-33-2—

20230-10-1—

20220-1——

Recent Matches

Maria TimofeevaLivesport Prague Open - Prague2026-07-23Hard6-1 6-1

Anna BlinkovaLivesport Prague Open - Prague2026-07-21Hard7-6(9) 3-6 6-1

Clara TausonAthens Open - Athens2026-07-17Hard6-2 6-3

Lilli TaggerAthens Open - Athens2026-07-15Hard6-2 6-2

Viktoria MorvayovaAthens Open - Athens2026-07-13Hard6-0 7-5

Sorana CirsteaWimbledon - London2026-06-30Grass6-1 7-6(6)

Laura SiegemundLexus Eastbourne Open - Eastbourne2026-06-23Grass3-6 7-6(2) 7-6(3)

Karolina PliskovaLexus Nottingham Open - Nottingham2026-06-16Grass2-6 7-6(3) 6-2

Dayana YastremskaLibema Open - 's-Hertogenbosch2026-06-09Grass6-1 6-2

Iga SwiatekFrench Open - Paris2026-05-27Clay6-2 6-3

Sloane StephensFrench Open - Paris2026-05-24Clay6-3 6-2

Emma NavarroInternationaux de Strasbourg - Strasbourg2026-05-17Clay6-1 6-4

Alina CharaevaTrophee Clarins - Paris2026-05-12Clay6-4 6-0

Laura SiegemundInternazionali BNL d'Italia - Rome2026-05-06Clay6-4 6-4

Belinda BencicCredit One Charleston Open - Charleston2026-04-02Clay7-6(4) 6-2

Akasha UrhoboCredit One Charleston Open - Charleston2026-04-01Clay6-1 6-1

Talia GibsonMiami Open - Miami2026-03-19Hard6-1 6-0

Zeynep SonmezDubai Duty Free Championships - Dubai2026-02-15Hard6-2 6-2

Ekaterina AlexandrovaMubadala Abu Dhabi Open - Abu Dhabi2026-02-07Hard7-6(5) 6-1

Clara TausonMubadala Abu Dhabi Open - Abu Dhabi2026-02-06Hard7-5 3-6 7-5

Sonay KartalMubadala Abu Dhabi Open - Abu Dhabi2026-02-05Hard6-0 6-2

Jelena OstapenkoMubadala Abu Dhabi Open - Abu Dhabi2026-02-04Hard6-4 6-3

Ashlyn KruegerMubadala Abu Dhabi Open - Abu Dhabi2026-02-02Hard6-3 6-0

Chloe PaquetMubadala Abu Dhabi Open - Abu Dhabi2026-02-01Hard6-2 6-2

Ekaterina OvcharenkoMubadala Abu Dhabi Open - Abu Dhabi2026-01-31Hard6-3 6-0

Ashlyn KruegerAustralian Open - Melbourne2026-01-20Hard6-3 6-3

Iva JovicASB Classic - Auckland2026-01-07Hard7-6(3) 6-4

Panna UdvardyASB Classic - Auckland2026-01-05Hard7-5 6-1

Panna UdvardyCali Open - Cali2025-11-01Clay7-6(4) 6-3

Julia RieraCali Open - Cali2025-10-30Clay6-2 6-4

Laura PigossiCali Open - Cali2025-10-29Clay6-4 6-1

Eva VedderCali Open - Cali2025-10-28Clay6-1 6-4

Katrina ScottQueretaro Open - Queretaro2025-10-26Clay6-2 6-1

Martina ColmegnaQueretaro Open - Queretaro2025-10-25Clay6-3 6-2

Selena JanicijevicQueretaro Open - Queretaro2025-10-24Clay6-4 6-0

Gabriela LeeQueretaro Open - Queretaro2025-10-23Clay7-5 6-3

Usue Maitane ArconadaQueretaro Open - Queretaro2025-10-21Clay6-3 5-7 6-3

Aneta KucmovaMallorca Women's Championships - Mallorca2025-10-09Clay6-2 6-2

Mina HodzicMallorca Women's Championships - Mallorca2025-10-07Clay7-5 5-7 7-6(6)

Lola RadivojevicInternazionali Di Calabria - Rende2025-10-05Clay6-2 6-7(1) 6-3

Maja ChwalinskaInternazionali Di Calabria - Rende2025-10-04Clay6-3 6-2

Nuria BrancaccioInternazionali Di Calabria - Rende2025-10-03Clay6-4 4-6 6-3

Aliona BolsovaInternazionali Di Calabria - Rende2025-10-01Clay6-4 6-3

Ekaterine GorgodzeInternazionali Di Calabria - Rende2025-09-29Clay6-1 6-1

Nuria BrancaccioLexus Tolentino Open - Tolentino2025-09-15Clay6-4 3-6 7-6(1)

Anouk KoevermansOpen Internacional de San Sebastian - San Sebastian2025-09-11Clay6-4 3-6 6-3

Nastasja Mariana SchunkOpen Internacional de San Sebastian - San Sebastian2025-09-09Clay6-2 6-1

Dominika SalkovaMontreux Nestle Open - Montreux2025-09-01Clay6-3 6-7(5) 7-6(4)

Destanee AiavaU.S. Open - New York2025-08-19Hard6-4 4-6 6-4

Xinyu WangPrague Open - Prague2025-07-25Hard6-4 6-1

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