The School of Odds

Anastasia Potapova v Venus Williams

2026-07-28 14:00 UTC — WTA Washington Open

Head to Head

24 sportsbooks (10 in analysis )

Estimated chance of each outcome, according to the model: IQM

Anastasia Potapova (Local)

Prediction 83.50%1.20fair odd
EV -3.98%
Edge -3.46%
Kelly -26.52%
Growth +0.000%

assuming max odds 1.15

Bookmakers’ predictions’ distribution
81.53%83.59%83.46%84.91%MINMEANMEDIANMAX
Odds’ distribution
1.111.131.141.1590.09%88.17%87.72%86.96%MINMEANMEDIANMAX

Venus Williams (Visit)

Prediction 16.50%6.06fair odd
EV +3.97%
Edge +0.630%
Kelly +0.749%
Growth +0.030%

assuming max odds 6.30

Bookmakers’ predictions’ distribution
15.09%16.41%16.54%18.47%MINMEANMEDIANMAX
Odds’ distribution
4.905.605.506.3020.41%17.85%18.18%15.87%MINMEANMEDIANMAX

Sportsbook Odds (24 sportsbooks)

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BookmakerLocalVisit ▼MarginUpdated
FanDuel1.12I 89.29%NM 84.91%EV -6.48%E -5.79%K -54.03%G +0.000%6.30I 15.87%NM 15.09%EV +3.97%E +0.630%K +0.749%G +0.030%5.2%2026-07-27 01:55
Pinnacle1.14I 87.72%NM 84.34%EV -4.81%E -4.22%K -34.38%G +0.000%6.14I 16.29%NM 15.66%EV +1.33%E +0.216%K +0.258%G +0.003%4.0%2026-07-27 01:40
DraftKings1.14I 87.72%NM 84.08%EV -4.81%E -4.22%K -34.38%G +0.000%6.02I 16.61%NM 15.92%EV -0.652%E -0.108%K -0.130%G +0.000%4.3%2026-07-27 02:50
Bovada1.13I 88.50%NM 84.15%EV -5.65%E -5.00%K -43.45%G +0.000%6.00I 16.67%NM 15.85%EV -0.982%E -0.164%K -0.196%G +0.000%5.2%2026-07-27 01:55
BetOnline.ag1.14I 87.72%NM 83.83%EV -4.81%E -4.22%K -34.38%G +0.000%5.91I 16.92%NM 16.17%EV -2.47%E -0.418%K -0.503%G +0.000%4.6%2026-07-27 03:05
LowVig.ag1.14I 87.72%NM 83.83%EV -4.81%E -4.22%K -34.38%G +0.000%5.91I 16.92%NM 16.17%EV -2.47%E -0.418%K -0.503%G +0.000%4.6%2026-07-27 03:05
Bet Right1.14I 87.72%NM 83.45%EV -4.81%E -4.22%K -34.38%G +0.000%5.75I 17.39%NM 16.55%EV -5.11%E -0.888%K -1.08%G +0.000%5.1%2026-07-27 02:55
BetUS1.13I 88.50%NM 83.58%EV -5.65%E -5.00%K -43.45%G +0.000%5.75I 17.39%NM 16.42%EV -5.11%E -0.888%K -1.08%G +0.000%5.9%2026-07-27 03:20
Fanatics1.14I 87.72%NM 83.33%EV -4.81%E -4.22%K -34.38%G +0.000%5.70I 17.54%NM 16.67%EV -5.93%E -1.04%K -1.26%G +0.000%5.3%2026-07-27 06:20
theScore Bet1.12I 89.29%NM 83.58%EV -6.48%E -5.79%K -54.03%G +0.000%5.70I 17.54%NM 16.42%EV -5.93%E -1.04%K -1.26%G +0.000%6.8%2026-07-27 02:00
888sport1.14I 87.72%NM 82.83%EV -4.81%E -4.22%K -34.38%G +0.000%5.50I 18.18%NM 17.17%EV -9.23%E -1.68%K -2.05%G +0.000%5.9%2026-07-27 02:45
Mr Green (SE)1.14I 87.72%NM 82.83%EV -4.81%E -4.22%K -34.38%G +0.000%5.50I 18.18%NM 17.17%EV -9.23%E -1.68%K -2.05%G +0.000%5.9%2026-07-27 02:50
Betr (AU)1.14I 87.72%NM 82.83%EV -4.81%E -4.22%K -34.38%G +0.000%5.50I 18.18%NM 17.17%EV -9.23%E -1.68%K -2.05%G +0.000%5.9%2026-07-27 06:20
PointsBet (AU)1.14I 87.72%NM 82.83%EV -4.81%E -4.22%K -34.38%G +0.000%5.50I 18.18%NM 17.17%EV -9.23%E -1.68%K -2.05%G +0.000%5.9%2026-07-27 06:20
888sport (SE)1.14I 87.72%NM 82.83%EV -4.81%E -4.22%K -34.38%G +0.000%5.50I 18.18%NM 17.17%EV -9.23%E -1.68%K -2.05%G +0.000%5.9%2026-07-27 03:25
SportsBet1.13I 88.50%NM 82.96%EV -5.65%E -5.00%K -43.45%G +0.000%5.50I 18.18%NM 17.04%EV -9.23%E -1.68%K -2.05%G +0.000%6.7%2026-07-27 02:35
BoyleSports1.12I 89.29%NM 83.08%EV -6.48%E -5.79%K -54.03%G +0.000%5.50I 18.18%NM 16.92%EV -9.23%E -1.68%K -2.05%G +0.000%7.5%2026-07-27 01:55
Betway1.12I 89.29%NM 83.08%EV -6.48%E -5.79%K -54.03%G +0.000%5.50I 18.18%NM 16.92%EV -9.23%E -1.68%K -2.05%G +0.000%7.5%2026-07-27 01:55
Paddy Power1.12I 89.29%NM 83.08%EV -6.48%E -5.79%K -54.03%G +0.000%5.50I 18.18%NM 16.92%EV -9.23%E -1.68%K -2.05%G +0.000%7.5%2026-07-27 02:10
PlayUp1.15I 86.96%NM 82.03%EV -3.98%E -3.46%K -26.52%G +0.000%5.25I 19.05%NM 17.97%EV -13.36%E -2.54%K -3.14%G +0.000%6.0%2026-07-27 07:09
BetAnything1.13I 88.50%NM 82.29%EV -5.65%E -5.00%K -43.45%G +0.000%5.25I 19.05%NM 17.71%EV -13.36%E -2.54%K -3.14%G +0.000%7.5%2026-07-27 02:55
Neds1.15I 86.96%NM 81.89%EV -3.98%E -3.46%K -26.52%G +0.000%5.20I 19.23%NM 18.11%EV -14.18%E -2.73%K -3.38%G +0.000%6.2%2026-07-27 02:55
Ladbrokes (AU)1.15I 86.96%NM 81.89%EV -3.98%E -3.46%K -26.52%G +0.000%5.20I 19.23%NM 18.11%EV -14.18%E -2.73%K -3.38%G +0.000%6.2%2026-07-27 02:55
ReBet1.11I 90.09%NM 81.53%EV -7.32%E -6.59%K -66.53%G +0.000%4.90I 20.41%NM 18.47%EV -19.14%E -3.91%K -4.91%G +0.000%10.5%2026-07-27 03:20
Margin = Margin (Overround) · I = Implied Probability · NM = No-Margin Probability · EV = Expected Value · E = Edge · K = Kelly Criterion · G = Bankroll Growth

Updated is when each book last changed its price, so an older time means the odds simply haven't moved, not that the price is stale. Books not seen in the last ~15 minutes are normally dropped; only if a whole market's feed goes quiet are the latest recorded prices shown instead.

Exchanges (5)

BookmakerLocalVisitMargin ▲Updated
Novig1.15I 86.96%NM 84.05%6.06I 16.50%NM 15.95%3.5%2026-07-27 07:10
Betfair Exchange (AU)1.14I 87.72%NM 84.03%6.00I 16.67%NM 15.97%4.4%2026-07-27 01:45
Betfair Exchange (UK)1.14I 87.72%NM 84.03%6.00I 16.67%NM 15.97%4.4%2026-07-27 03:45
Betfair Exchange (EU)1.14I 87.72%NM 84.03%6.00I 16.67%NM 15.97%4.4%2026-07-27 03:45
ProphetX1.14I 87.72%NM 81.43%5.00I 20.00%NM 18.57%7.7%2026-07-27 03:00