The School of Tennis Oddsodds.tennis
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Marta Kostyuk v Iga Swiatek

2026-08-09 19:00 UTC — WTA Canadian Open

Head to Head

51 sportsbooks (16 in analysis )

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

Marta Kostyuk (Local)

Prediction 41.74%2.40fair odd
EV -2.76%
Edge -1.18%
Kelly -2.07%
Growth +0.000%

assuming max odds 2.33

Bookmakers’ predictions’ distribution
41.10%41.73%41.70%43.27%MIN.MEANMEDIANMAX.
Odds’ distribution
2.102.252.252.3347.62%44.43%44.44%42.92%MIN.MEANMEDIANMAX.

Iga Swiatek (Visit)

Prediction 58.26%1.72fair odd
EV -2.70%
Edge -1.62%
Kelly -4.03%
Growth +0.000%

assuming max odds 1.67

Bookmakers’ predictions’ distribution
56.73%58.27%58.30%58.90%MIN.MEANMEDIANMAX.
Odds’ distribution
1.551.621.621.6764.52%61.85%61.73%59.88%MIN.MEANMEDIANMAX.

For Head to Head, Interquartile mean (Vetted List) estimates these probabilities: Marta Kostyuk (Local): 41.74%; Iga Swiatek (Visit): 58.26%. For Iga Swiatek (Visit), that estimate is equivalent to fair decimal odds of 1.72. No eligible bookmaker offers odds above that level: the best available odds are 1.67, with an expected value of -2.70%; they do not produce positive expected value.

Sportsbook Odds (51 sportsbooks)

We're not affiliated with any bookmaker, we earn nothing from any action done with them.

BookmakerLocal ▼VisitMarginUpdated
1xBet🎯2.33I 42.92%NM 41.16%EV -2.76%E -1.18%K -2.07%G +0.000%1.63I 61.35%NM 58.84%EV -5.03%E -3.08%K -7.98%G +0.000%4.3%2026-08-07 06:40
Bovada🎯2.30I 43.48%NM 41.77%EV -4.01%E -1.74%K -3.08%G +0.000%1.65I 60.61%NM 58.23%EV -3.86%E -2.34%K -5.94%G +0.000%4.1%2026-08-07 05:05
Fanatics🎯2.30I 43.48%NM 41.33%EV -4.01%E -1.74%K -3.08%G +0.000%1.62I 61.73%NM 58.67%EV -5.61%E -3.46%K -9.05%G +0.000%5.2%2026-08-07 05:36
BoyleSports🎯2.30I 43.48%NM 41.33%EV -4.01%E -1.74%K -3.08%G +0.000%1.62I 61.73%NM 58.67%EV -5.61%E -3.46%K -9.05%G +0.000%5.2%2026-08-07 05:25
Hard Rock Bet🎯2.30I 43.48%NM 41.33%EV -4.01%E -1.74%K -3.08%G +0.000%1.62I 61.73%NM 58.67%EV -5.61%E -3.46%K -9.05%G +0.000%5.2%2026-08-07 06:16
Marathon Bet🎯2.30I 43.48%NM 41.18%EV -4.01%E -1.74%K -3.08%G +0.000%1.61I 62.11%NM 58.82%EV -6.19%E -3.85%K -10.15%G +0.000%5.6%2026-08-07 06:40
BetMGM🎯2.30I 43.48%NM 41.18%EV -4.01%E -1.74%K -3.08%G +0.000%1.61I 62.11%NM 58.82%EV -6.19%E -3.85%K -10.15%G +0.000%5.6%2026-08-07 06:40
PointsBet (AU)🎯2.29I 43.67%NM 41.43%EV -4.43%E -1.93%K -3.43%G +0.000%1.62I 61.73%NM 58.57%EV -5.61%E -3.46%K -9.05%G +0.000%5.4%2026-08-07 04:36
Unibet (NL)🎯2.28I 43.86%NM 41.69%EV -4.84%E -2.12%K -3.78%G +0.000%1.63I 61.35%NM 58.31%EV -5.03%E -3.08%K -7.98%G +0.000%5.2%2026-08-07 05:40
Grosvenor🎯2.28I 43.86%NM 41.69%EV -4.84%E -2.12%K -3.78%G +0.000%1.63I 61.35%NM 58.31%EV -5.03%E -3.08%K -7.98%G +0.000%5.2%2026-08-07 05:40
Unibet🎯2.28I 43.86%NM 41.69%EV -4.84%E -2.12%K -3.78%G +0.000%1.63I 61.35%NM 58.31%EV -5.03%E -3.08%K -7.98%G +0.000%5.2%2026-08-07 05:40
Unibet (SE)🎯2.28I 43.86%NM 41.69%EV -4.84%E -2.12%K -3.78%G +0.000%1.63I 61.35%NM 58.31%EV -5.03%E -3.08%K -7.98%G +0.000%5.2%2026-08-07 05:41
LiveScore Bet🎯2.28I 43.86%NM 41.69%EV -4.84%E -2.12%K -3.78%G +0.000%1.63I 61.35%NM 58.31%EV -5.03%E -3.08%K -7.98%G +0.000%5.2%2026-08-07 05:40
Virgin Bet🎯2.28I 43.86%NM 41.69%EV -4.84%E -2.12%K -3.78%G +0.000%1.63I 61.35%NM 58.31%EV -5.03%E -3.08%K -7.98%G +0.000%5.2%2026-08-07 05:40
BetRivers🎯2.28I 43.86%NM 41.69%EV -4.84%E -2.12%K -3.78%G +0.000%1.63I 61.35%NM 58.31%EV -5.03%E -3.08%K -7.98%G +0.000%5.2%2026-08-07 05:40
TABtouch🎯2.28I 43.86%NM 41.69%EV -4.84%E -2.12%K -3.78%G +0.000%1.63I 61.35%NM 58.31%EV -5.03%E -3.08%K -7.98%G +0.000%5.2%2026-08-07 05:40
Casumo🎯2.28I 43.86%NM 41.69%EV -4.84%E -2.12%K -3.78%G +0.000%1.63I 61.35%NM 58.31%EV -5.03%E -3.08%K -7.98%G +0.000%5.2%2026-08-07 05:40
LeoVegas (SE)🎯2.28I 43.86%NM 41.69%EV -4.84%E -2.12%K -3.78%G +0.000%1.63I 61.35%NM 58.31%EV -5.03%E -3.08%K -7.98%G +0.000%5.2%2026-08-07 05:40
ATG (SE)🎯2.28I 43.86%NM 41.69%EV -4.84%E -2.12%K -3.78%G +0.000%1.63I 61.35%NM 58.31%EV -5.03%E -3.08%K -7.98%G +0.000%5.2%2026-08-07 05:40
Svenska Spel🎯2.28I 43.86%NM 41.69%EV -4.84%E -2.12%K -3.78%G +0.000%1.63I 61.35%NM 58.31%EV -5.03%E -3.08%K -7.98%G +0.000%5.2%2026-08-07 05:39
Bally Bet🎯2.28I 43.86%NM 41.69%EV -4.84%E -2.12%K -3.78%G +0.000%1.63I 61.35%NM 58.31%EV -5.03%E -3.08%K -7.98%G +0.000%5.2%2026-08-07 05:40
betPARX🎯2.28I 43.86%NM 41.69%EV -4.84%E -2.12%K -3.78%G +0.000%1.63I 61.35%NM 58.31%EV -5.03%E -3.08%K -7.98%G +0.000%5.2%2026-08-07 05:40
DraftKings🎯2.27I 44.05%NM 42.09%EV -5.26%E -2.32%K -4.14%G +0.000%1.65I 60.61%NM 57.91%EV -3.86%E -2.34%K -5.94%G +0.000%4.7%2026-08-07 06:01
FanDuel🎯2.26I 44.25%NM 42.20%EV -5.68%E -2.51%K -4.51%G +0.000%1.65I 60.61%NM 57.80%EV -3.86%E -2.34%K -5.94%G +0.000%4.9%2026-08-07 04:25
PlayUp🎯2.25I 44.44%NM 42.01%EV -6.10%E -2.71%K -4.88%G +0.000%1.63I 61.35%NM 57.99%EV -5.03%E -3.08%K -7.98%G +0.000%5.8%2026-08-07 06:10
Sky Bet🎯2.25I 44.44%NM 41.86%EV -6.10%E -2.71%K -4.88%G +0.000%1.62I 61.73%NM 58.14%EV -5.61%E -3.46%K -9.05%G +0.000%6.2%2026-08-07 04:30
Paddy Power🎯2.25I 44.44%NM 41.86%EV -6.10%E -2.71%K -4.88%G +0.000%1.62I 61.73%NM 58.14%EV -5.61%E -3.46%K -9.05%G +0.000%6.2%2026-08-07 04:25
Winamax (DE)🎯2.25I 44.44%NM 41.86%EV -6.10%E -2.71%K -4.88%G +0.000%1.62I 61.73%NM 58.14%EV -5.61%E -3.46%K -9.05%G +0.000%6.2%2026-08-07 04:30
betfred_uk🎯2.25I 44.44%NM 41.86%EV -6.10%E -2.71%K -4.88%G +0.000%1.62I 61.73%NM 58.14%EV -5.61%E -3.46%K -9.05%G +0.000%6.2%2026-08-07 04:30
Dabble (AU)🎯2.25I 44.44%NM 41.86%EV -6.10%E -2.71%K -4.88%G +0.000%1.62I 61.73%NM 58.14%EV -5.61%E -3.46%K -9.05%G +0.000%6.2%2026-08-07 06:10
Ladbrokes (AU)🎯2.25I 44.44%NM 41.86%EV -6.10%E -2.71%K -4.88%G +0.000%1.62I 61.73%NM 58.14%EV -5.61%E -3.46%K -9.05%G +0.000%6.2%2026-08-07 06:40
Neds🎯2.25I 44.44%NM 41.86%EV -6.10%E -2.71%K -4.88%G +0.000%1.62I 61.73%NM 58.14%EV -5.61%E -3.46%K -9.05%G +0.000%6.2%2026-08-07 06:41
Betr (AU)🎯2.25I 44.44%NM 41.71%EV -6.10%E -2.71%K -4.88%G +0.000%1.61I 62.11%NM 58.29%EV -6.19%E -3.85%K -10.15%G +0.000%6.6%2026-08-07 05:41
theScore Bet🎯2.25I 44.44%NM 41.71%EV -6.10%E -2.71%K -4.88%G +0.000%1.61I 62.11%NM 58.29%EV -6.19%E -3.85%K -10.15%G +0.000%6.6%2026-08-07 05:45
Betway🎯2.25I 44.44%NM 41.56%EV -6.10%E -2.71%K -4.88%G +0.000%1.60I 62.50%NM 58.44%EV -6.78%E -4.24%K -11.29%G +0.000%6.9%2026-08-07 06:05
Tipico (DE)🎯2.25I 44.44%NM 41.10%EV -6.10%E -2.71%K -4.88%G +0.000%1.57I 63.69%NM 58.90%EV -8.52%E -5.43%K -14.95%G +0.000%8.1%2026-08-07 06:50
Coral🎯2.25I 44.44%NM 41.10%EV -6.10%E -2.71%K -4.88%G +0.000%1.57I 63.69%NM 58.90%EV -8.52%E -5.43%K -14.95%G +0.000%8.1%2026-08-07 06:40
Ladbrokes (UK)🎯2.25I 44.44%NM 41.10%EV -6.10%E -2.71%K -4.88%G +0.000%1.57I 63.69%NM 58.90%EV -8.52%E -5.43%K -14.95%G +0.000%8.1%2026-08-07 06:41
Betsson🎯2.24I 44.64%NM 41.97%EV -6.51%E -2.91%K -5.25%G +0.000%1.62I 61.73%NM 58.03%EV -5.61%E -3.46%K -9.05%G +0.000%6.4%2026-08-07 04:26
NordicBet🎯2.24I 44.64%NM 41.97%EV -6.51%E -2.91%K -5.25%G +0.000%1.62I 61.73%NM 58.03%EV -5.61%E -3.46%K -9.05%G +0.000%6.4%2026-08-07 04:30
PMU (FR)🎯2.23I 44.84%NM 41.78%EV -6.93%E -3.11%K -5.63%G +0.000%1.60I 62.50%NM 58.22%EV -6.78%E -4.24%K -11.29%G +0.000%7.3%2026-08-07 05:40
GTbets🎯2.21I 45.25%NM 43.04%EV -7.77%E -3.51%K -6.42%G +0.000%1.67I 59.88%NM 56.96%EV -2.70%E -1.62%K -4.03%G +0.000%5.1%2026-08-07 03:00
Unibet (UK)🎯2.21I 45.25%NM 42.30%EV -7.77%E -3.51%K -6.42%G +0.000%1.62I 61.73%NM 57.70%EV -5.61%E -3.46%K -9.05%G +0.000%7.0%2026-08-07 04:26
TAB🎯2.20I 45.45%NM 42.41%EV -8.18%E -3.72%K -6.82%G +0.000%1.62I 61.73%NM 57.59%EV -5.61%E -3.46%K -9.05%G +0.000%7.2%2026-08-07 06:10
LeoVegas🎯2.20I 45.45%NM 42.11%EV -8.18%E -3.72%K -6.82%G +0.000%1.60I 62.50%NM 57.89%EV -6.78%E -4.24%K -11.29%G +0.000%8.0%2026-08-07 04:26
Bet Victor🎯2.20I 45.45%NM 42.11%EV -8.18%E -3.72%K -6.82%G +0.000%1.60I 62.50%NM 57.89%EV -6.78%E -4.24%K -11.29%G +0.000%8.0%2026-08-07 05:44
SportsBet🎯2.15I 46.51%NM 43.27%EV -10.27%E -4.78%K -8.93%G +0.000%1.64I 60.98%NM 56.73%EV -4.45%E -2.71%K -6.95%G +0.000%7.5%2026-08-07 02:10
Winamax (FR)🎯2.15I 46.51%NM 42.36%EV -10.27%E -4.78%K -8.93%G +0.000%1.58I 63.29%NM 57.64%EV -7.94%E -5.03%K -13.69%G +0.000%9.8%2026-08-07 04:30
Betclic (FR)🎯2.15I 46.51%NM 42.20%EV -10.27%E -4.78%K -8.93%G +0.000%1.57I 63.69%NM 57.80%EV -8.52%E -5.43%K -14.95%G +0.000%10.2%2026-08-07 04:29
ReBet🎯2.15I 46.51%NM 42.20%EV -10.27%E -4.78%K -8.93%G +0.000%1.57I 63.69%NM 57.80%EV -8.52%E -5.43%K -14.95%G +0.000%10.2%2026-08-07 04:26
Unibet (FR)🎯2.10I 47.62%NM 42.47%EV -12.36%E -5.88%K -11.23%G +0.000%1.55I 64.52%NM 57.53%EV -9.69%E -6.25%K -17.62%G +0.000%12.1%2026-08-07 04:25
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
Novig◎2.22I 45.05%NM 42.93%1.67I 59.88%NM 57.07%4.9%2026-08-07 06:06
Betfair Exchange (UK)◎2.00I 50.00%NM 46.38%1.73I 57.80%NM 53.62%7.8%2026-08-07 07:00
Betfair Exchange (EU)◎2.00I 50.00%NM 46.24%1.72I 58.14%NM 53.76%8.1%2026-08-07 06:56
Betfair Exchange (AU)◎1.98I 50.51%NM 46.63%1.73I 57.80%NM 53.37%8.3%2026-08-07 07:00
Smarkets◎2.10I 47.62%NM 42.47%1.55I 64.52%NM 57.53%12.1%2026-08-07 04:26