The School of Tennis Oddsodds.tennis
Default modelInterquartile mean (Vetted List)
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Alycia Parks v Ksenia Efremova

Kickoff: 2026-04-21 18:00 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

20 sportsbooks (8 in analysis )

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

Alycia Parks (Local)

Prediction 75.90%1.32fair odd
EV -1.33%
Edge -1.02%
Kelly -4.43%
Growth +0.000%

assuming max odds 1.30

Bookmakers’ predictions’ distribution
72.92%75.74%75.89%77.98%MIN.MEANMEDIANMAX.
Odds’ distribution
1.201.251.251.3083.33%80.29%80.00%76.92%MIN.MEANMEDIANMAX.

Ksenia Efremova (Visit)

Prediction 24.10%4.15fair odd
EV +4.35%
Edge +1.00%
Kelly +1.31%
Growth +0.057%

assuming max odds 4.33

Bookmakers’ predictions’ distribution
22.02%24.26%24.11%27.08%MIN.MEANMEDIANMAX.
Odds’ distribution
3.503.913.904.3328.57%25.60%25.67%23.09%MIN.MEANMEDIANMAX.

At the last prices before kickoff, Interquartile mean (Vetted List) estimated these probabilities for Head to Head: Alycia Parks (Local): 75.90%; Ksenia Efremova (Visit): 24.10%. For Ksenia Efremova (Visit), that estimate was equivalent to fair decimal odds of 4.15. 4 bookmakers offered closing odds above that level; the best were 4.33, corresponding to a positive expected value of +4.35%.

Sportsbook Odds (20 sportsbooks)

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BookmakerLocalVisit ▼MarginUpdated
Pinnacle🎯1.24I 80.65%NM 77.74%EV -5.88%E -4.74%K -24.51%G +0.000%4.33I 23.09%NM 22.26%EV +4.35%E +1.00%K +1.31%G +0.057%3.7%2026-04-21 17:20
theScore Bet🎯1.20I 83.33%NM 77.98%EV -8.92%E -7.43%K -44.59%G +0.000%4.25I 23.53%NM 22.02%EV +2.42%E +0.569%K +0.744%G +0.018%6.9%2026-04-21 17:31
LowVig.ag🎯1.24I 80.65%NM 77.08%EV -5.88%E -4.74%K -24.51%G +0.000%4.17I 23.98%NM 22.92%EV +0.491%E +0.118%K +0.155%G +0.001%4.6%2026-04-21 17:15
BetOnline.ag🎯1.24I 80.65%NM 77.08%EV -5.88%E -4.74%K -24.51%G +0.000%4.17I 23.98%NM 22.92%EV +0.491%E +0.118%K +0.155%G +0.001%4.6%2026-04-21 17:15
NordicBet🎯1.24I 80.65%NM 76.78%EV -5.88%E -4.74%K -24.51%G +0.000%4.10I 24.39%NM 23.22%EV -1.20%E -0.292%K -0.386%G +0.000%5.0%2026-04-21 17:05
Betsson🎯1.24I 80.65%NM 76.78%EV -5.88%E -4.74%K -24.51%G +0.000%4.10I 24.39%NM 23.22%EV -1.20%E -0.292%K -0.386%G +0.000%5.0%2026-04-21 17:05
ReBet🎯1.25I 80.00%NM 76.19%EV -5.12%E -4.10%K -20.49%G +0.000%4.00I 25.00%NM 23.81%EV -3.61%E -0.901%K -1.20%G +0.000%5.0%2026-04-21 17:05
TAB🎯1.20I 83.33%NM 76.92%EV -8.92%E -7.43%K -44.59%G +0.000%4.00I 25.00%NM 23.08%EV -3.61%E -0.901%K -1.20%G +0.000%8.3%2026-04-21 17:30
Everygame🎯1.20I 83.33%NM 76.92%EV -8.92%E -7.43%K -44.59%G +0.000%4.00I 25.00%NM 23.08%EV -3.61%E -0.901%K -1.20%G +0.000%8.3%2026-04-21 17:19
Bovada🎯1.27I 78.74%NM 75.44%EV -3.61%E -2.84%K -13.35%G +0.000%3.90I 25.64%NM 24.56%EV -6.02%E -1.54%K -2.07%G +0.000%4.4%2026-04-21 17:04
GTbets🎯1.29I 77.52%NM 75.10%EV -2.09%E -1.62%K -7.20%G +0.000%3.89I 25.71%NM 24.90%EV -6.26%E -1.61%K -2.16%G +0.000%3.2%2026-04-21 17:05
PlayUp🎯1.25I 80.00%NM 75.49%EV -5.12%E -4.10%K -20.49%G +0.000%3.85I 25.97%NM 24.51%EV -7.22%E -1.88%K -2.53%G +0.000%6.0%2026-04-21 17:24
Ladbrokes (UK)🎯1.25I 80.00%NM 75.25%EV -5.12%E -4.10%K -20.49%G +0.000%3.80I 26.32%NM 24.75%EV -8.43%E -2.22%K -3.01%G +0.000%6.3%2026-04-21 17:31
Coral🎯1.25I 80.00%NM 75.25%EV -5.12%E -4.10%K -20.49%G +0.000%3.80I 26.32%NM 24.75%EV -8.43%E -2.22%K -3.01%G +0.000%6.3%2026-04-21 17:31
Fliff🎯1.21I 82.64%NM 75.85%EV -8.16%E -6.74%K -38.85%G +0.000%3.80I 26.32%NM 24.15%EV -8.43%E -2.22%K -3.01%G +0.000%9.0%2026-04-21 17:30
888sport🎯1.25I 80.00%NM 75.00%EV -5.12%E -4.10%K -20.49%G +0.000%3.75I 26.67%NM 25.00%EV -9.63%E -2.57%K -3.50%G +0.000%6.7%2026-04-21 17:31
FanDuel🎯1.25I 80.00%NM 74.75%EV -5.12%E -4.10%K -20.49%G +0.000%3.70I 27.03%NM 25.25%EV -10.84%E -2.93%K -4.01%G +0.000%7.0%2026-04-21 17:30
Betway🎯1.30I 76.92%NM 72.92%EV -1.33%E -1.02%K -4.43%G +0.000%3.50I 28.57%NM 27.08%EV -15.66%E -4.47%K -6.26%G +0.000%5.5%2026-04-21 17:30
William Hill🎯1.29I 77.52%NM 73.07%EV -2.09%E -1.62%K -7.20%G +0.000%3.50I 28.57%NM 26.93%EV -15.66%E -4.47%K -6.26%G +0.000%6.1%2026-04-21 17:05
BoyleSports🎯1.25I 80.00%NM 73.68%EV -5.12%E -4.10%K -20.49%G +0.000%3.50I 28.57%NM 26.32%EV -15.66%E -4.47%K -6.26%G +0.000%8.6%2026-04-21 17:31
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
Betfair Exchange (EU)◎1.32I 75.76%NM 75.19%4.00I 25.00%NM 24.81%0.8%2026-04-21 17:30
Betfair Exchange (UK)◎1.32I 75.76%NM 75.19%4.00I 25.00%NM 24.81%0.8%2026-04-21 17:30
Smarkets◎1.25I 80.00%NM 77.06%4.20I 23.81%NM 22.94%3.8%2026-04-21 17:24
Betfair Exchange (AU)◎1.27I 78.74%NM 75.67%3.95I 25.32%NM 24.33%4.1%2026-04-21 17:30
Novig◎1.27I 78.74%NM 75.48%3.91I 25.58%NM 24.52%4.3%2026-04-21 17:30