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

Jan-Lennard Struff

MEN30Hot

Age36

BirthplaceWarstein, Germany

Height1.93m

Weight92kg

Best HandRight

BackhandTwo-Handed

Recent Form

Win Rate:63%

Fatigue:30/100

Inactive:2 Days

Overall

Glicko-21.950

#90RD 69

Elo2.049

#38

Hard

Glicko-21.888

#206

Elo1.718

#230

Clay

Glicko-21.849

#242

Elo1.755

#147

Grass

Glicko-21.841

#12

Elo1.727

Surface Record

HardClayGrass

20262-64-46-3

20259-133-73-3

20249-1415-56-2

20236-109-55-2

20227-80-21-3

202114-1911-81-3

Recent Matches

Mariano NavoneGenerali Open - Kitzbuhel2026-07-22Clay6-0 6-3

Alexander ShevchenkoGenerali Open - Kitzbuhel2026-07-21Clay3-6 7-6(5) 6-4

Jannik SinnerWimbledon - London2026-07-07Grass7-5 7-6(4) 6-3

Hubert HurkaczWimbledon - London2026-07-05Grass3-6 6-7(5) 7-6(2) 7-5 4-2 ret.

Daniil MedvedevWimbledon - London2026-07-03Grass7-6(4) 7-6(5) 7-5

Brandon NakashimaWimbledon - London2026-07-02Grass4-6 7-6(6) 7-6(5) 6-7(6) 7-6(7)

Sebastian BaezWimbledon - London2026-06-29Grass6-1 7-6(4) 4-6 2-6 7-5

Nuno BorgesMallorca Championships - Mallorca2026-06-23Grass6-4 7-5

Martin LandaluceMallorca Championships - Mallorca2026-06-22Grass6-3 1-6 7-5

Alexander BublikBoss Open - Stuttgart2026-06-10Grass7-6(3) 3-6 6-2

Alexis GalarneauBoss Open - Stuttgart2026-06-09Grass6-2 6-7(5) 6-3

Jaime FariaFrench Open - Paris2026-05-28Clay7-5 7-6(1) 6-2

Alexander BublikFrench Open - Paris2026-05-26Clay7-5 6-7(6) 6-4 7-5

Jakub MensikHamburg Open - Hamburg2026-05-18Clay7-6(3) 6-2

Nicolas Alvarez VaronaValencia Challenger2026-05-12Clay6-1 5-7 6-2

Jiri LeheckaInternazionali BNL d'Italia - Rome2026-05-08Clay7-6(4) 6-3

Francisco ComesanaInternazionali BNL d'Italia - Rome2026-05-06Clay6-2 6-4

Alex MichelsenMutua Madrid Open - Madrid2026-04-24Clay6-2 6-1

Alexandre MullerMutua Madrid Open - Madrid2026-04-22Clay7-6(3) 6-0

Nikoloz BasilashviliMonte-Carlo Rolex Masters - Monte-Carlo2026-04-04Clay6-3 6-3

Darwin BlanchMiami Open - Miami2026-03-19Hard6-3 3-6 6-3

James DuckworthPhoenix Challenger2026-03-10Hard6-7(3) 6-4 6-4

Zizou BergsBNP Paribas Open - Indian Wells2026-03-04Hard6-3 6-4

Alexander BublikDubai Duty Free Tennis Championships - Dubai2026-02-24Hard6-3 6-4

Otto VirtanenDubai Duty Free Tennis Championships - Dubai2026-02-22Hard6-7(7) 6-4 6-4

Abdulrahman Al JanahiDubai Duty Free Tennis Championships - Dubai2026-02-21Hard6-0 6-1

Alexander BublikABN AMRO Open - Rotterdam2026-02-12I.Hard7-6(2) 4-6 6-3

Hugo GrenierABN AMRO Open - Rotterdam2026-02-10I.Hard6-0 6-4

Juan Pablo VarillasDavis Cup, World Group, Q, GER-PER 4-02026-02-06I.Hard6-4 6-2

Vit KoprivaAustralian Open - Melbourne2026-01-20Hard4-6 6-2 2-6 6-3 6-1

Emilio NavaASB Classic - Auckland2026-01-11Hard3-6 6-4 6-3

Anton SheppASB Classic - Auckland2026-01-10Hard7-5 6-2

Botic Van De ZandschulpHong Kong Tennis Open - Hong Kong2026-01-06Hard6-3 1-6 6-1

Nishesh BasavareddyHong Kong Tennis Open - Hong Kong2026-01-05Hard7-6(5) 6-2

Zsombor PirosHong Kong Tennis Open - Hong Kong2026-01-04Hard7-5 7-6(3)

Pablo Carreno-BustaDavis Cup, World Group, SF, ESP-GER 2-12025-11-22I.Hard6-4 7-6(6)

Tomas Martin EtcheverryDavis Cup, World Group, QF, ARG-GER 1-22025-11-20I.Hard7-6(3) 7-6(7)

Liam BroadyLyon Challenger2025-11-15I.Hard6-4 6-4

Dan AddedLyon Challenger2025-11-14I.Hard1-6 7-6(5) 6-2

Vit KoprivaLyon Challenger2025-11-13I.Hard6-1 6-2

Mark LajalLyon Challenger2025-11-12I.Hard6-4 6-2

Beibit ZhukayevLyon Challenger2025-11-11I.Hard6-7(5) 7-6(1) 6-4

Alexandre MullerHellenic Championship - Athens2025-11-03I.Hard6-3 2-6 7-6(6)

Henry BernetHellenic Championship - Athens2025-11-02I.Hard4-6 6-4 6-3

Mark LajalHellenic Championship - Athens2025-11-01I.Hard7-6(1) 7-5

Alexander BlockxBratislava 2 Challenger2025-10-27I.Hard3-6 6-4 7-6(5)

Corentin MoutetAlmaty Open - Almaty2025-10-17I.Hard6-4 7-5

Karen KhachanovAlmaty Open - Almaty2025-10-16I.Hard4-6 7-6(5) 6-3

Mackenzie McdonaldAlmaty Open - Almaty2025-10-15I.Hard2-6 6-3 6-4

Stefanos SakellaridisRoanne Challenger2025-10-08I.Hard3-6 7-6(6) 7-5

Simulate a match with StruffGet win probability, VOPO edge vs Sharp Market odds, and Glicko-2 breakdown.

Open Simulator →