The School of Tennis Oddsodds.tennis
Default modelInterquartile mean (Vetted List)
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Simona Waltert v Despina Papamichail

Kickoff: 2026-04-20 09:00 UTC

Closing line — the calculated probabilities and expected value from the last prices recorded before kickoff, under your selected model. The game has started, so these are not live figures. Assess the reliability of each model's probability predictions against all settled-game outcomes →

Head to Head

17 sportsbooks (7 in analysis )

Estimated chance of each outcome, according to the model: Interquartile mean (Vetted List)

Simona Waltert (Local)

Prediction 81.79%1.22fair odd
EV +2.23%
Edge +1.79%
Kelly +8.93%
Growth +0.199%

assuming max odds 1.25

Bookmakers’ predictions’ distribution
76.63%81.84%81.43%83.58%MIN.MEANMEDIANMAX.
Odds’ distribution
1.121.161.151.2589.29%86.03%86.96%80.00%MIN.MEANMEDIANMAX.

Despina Papamichail (Visit)

Prediction 18.21%5.49fair odd
EV +3.82%
Edge +0.670%
Kelly +0.812%
Growth +0.031%

assuming max odds 5.70

Bookmakers’ predictions’ distribution
16.42%18.16%18.57%23.37%MIN.MEANMEDIANMAX.
Odds’ distribution
4.005.005.005.7025.00%19.99%20.00%17.54%MIN.MEANMEDIANMAX.

At the last prices before kickoff, Interquartile mean (Vetted List) estimated these probabilities for Head to Head: Simona Waltert (Local): 81.79%; Despina Papamichail (Visit): 18.21%. For Despina Papamichail (Visit), that estimate was equivalent to fair decimal odds of 5.49. 5 bookmakers offered closing odds above that level; the best were 5.70, corresponding to a positive expected value of +3.82%.

Sportsbook Odds (17 sportsbooks)

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BookmakerLocal ▼VisitMarginUpdated
GTbets🎯1.25I 80.00%NM 77.99%EV +2.23%E +1.79%K +8.93%G +0.199%4.43I 22.57%NM 22.01%EV -19.31%E -4.36%K -5.63%G +0.000%2.6%2026-04-20 07:59
William Hill🎯1.22I 81.97%NM 76.63%EV -0.221%E -0.181%K -1.00%G +0.000%4.00I 25.00%NM 23.37%EV -27.15%E -6.79%K -9.05%G +0.000%7.0%2026-04-20 08:05
Pinnacle🎯1.20I 83.33%NM 80.39%EV -1.86%E -1.55%K -9.28%G +0.000%4.92I 20.33%NM 19.61%EV -10.39%E -2.11%K -2.65%G +0.000%3.7%2026-04-20 08:05
PlayUp🎯1.20I 83.33%NM 78.57%EV -1.86%E -1.55%K -9.28%G +0.000%4.40I 22.73%NM 21.43%EV -19.86%E -4.51%K -5.84%G +0.000%6.1%2026-04-20 08:05
LowVig.ag🎯1.17I 85.47%NM 81.34%EV -4.31%E -3.68%K -25.35%G +0.000%5.10I 19.61%NM 18.66%EV -7.11%E -1.39%K -1.73%G +0.000%5.1%2026-04-20 08:05
BetOnline.ag🎯1.17I 85.47%NM 81.34%EV -4.31%E -3.68%K -25.35%G +0.000%5.10I 19.61%NM 18.66%EV -7.11%E -1.39%K -1.73%G +0.000%5.1%2026-04-20 08:05
888sport (SE)🎯1.17I 85.47%NM 79.37%EV -4.31%E -3.68%K -25.35%G +0.000%4.50I 22.22%NM 20.63%EV -18.04%E -4.01%K -5.15%G +0.000%7.7%2026-04-20 08:14
Everygame🎯1.16I 86.21%NM 79.51%EV -5.13%E -4.42%K -32.05%G +0.000%4.50I 22.22%NM 20.49%EV -18.04%E -4.01%K -5.15%G +0.000%8.4%2026-04-20 07:59
Betway🎯1.15I 86.96%NM 82.71%EV -5.95%E -5.17%K -39.64%G +0.000%5.50I 18.18%NM 17.29%EV +0.175%E +0.032%K +0.039%G +0.000%5.1%2026-04-20 08:15
Ladbrokes (UK)🎯1.14I 87.72%NM 82.83%EV -6.76%E -5.93%K -48.31%G +0.000%5.50I 18.18%NM 17.17%EV +0.175%E +0.032%K +0.039%G +0.000%5.9%2026-04-20 08:14
theScore Bet🎯1.14I 87.72%NM 82.02%EV -6.76%E -5.93%K -48.31%G +0.000%5.20I 19.23%NM 17.98%EV -5.29%E -1.02%K -1.26%G +0.000%7.0%2026-04-20 08:15
888sport🎯1.14I 87.72%NM 81.43%EV -6.76%E -5.93%K -48.31%G +0.000%5.00I 20.00%NM 18.57%EV -8.93%E -1.79%K -2.23%G +0.000%7.7%2026-04-20 08:15
BoyleSports🎯1.14I 87.72%NM 81.43%EV -6.76%E -5.93%K -48.31%G +0.000%5.00I 20.00%NM 18.57%EV -8.93%E -1.79%K -2.23%G +0.000%7.7%2026-04-20 08:15
Mr Green (SE)🎯1.14I 87.72%NM 81.43%EV -6.76%E -5.93%K -48.31%G +0.000%5.00I 20.00%NM 18.57%EV -8.93%E -1.79%K -2.23%G +0.000%7.7%2026-04-20 08:15
Coral🎯1.13I 88.50%NM 82.96%EV -7.58%E -6.71%K -58.32%G +0.000%5.50I 18.18%NM 17.04%EV +0.175%E +0.032%K +0.039%G +0.000%6.7%2026-04-20 08:15
Betsson🎯1.12I 89.29%NM 83.58%EV -8.40%E -7.50%K -69.99%G +0.000%5.70I 17.54%NM 16.42%EV +3.82%E +0.670%K +0.812%G +0.031%6.8%2026-04-20 08:15
NordicBet🎯1.12I 89.29%NM 83.58%EV -8.40%E -7.50%K -69.99%G +0.000%5.70I 17.54%NM 16.42%EV +3.82%E +0.670%K +0.812%G +0.031%6.8%2026-04-20 08:15
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 (1)

BookmakerLocalVisitMargin ▲Updated
Smarkets◎1.16I 86.21%NM 83.33%5.80I 17.24%NM 16.67%3.4%2026-04-20 08:15