Language:English
Marta Kostyuk v Sloane Stephens
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
Marta Kostyuk (Local)
Prediction 85.21%1.17fair odd
EV -2.01%
Edge -1.75%
Kelly -13.39%
Growth +0.000%
assuming max odds 1.15
Bookmakers’ predictions’ distribution
82.44%85.05%85.11%87.95%MIN.MEANMEDIANMAX.
Odds’ distribution
1.071.121.121.1593.46%89.67%89.29%86.96%MIN.MEANMEDIANMAX.
Sloane Stephens (Visit)
Prediction 14.79%6.76fair odd
EV +19.80%
Edge +2.44%
Kelly +2.79%
Growth +0.552%
assuming max odds 8.10
Bookmakers’ predictions’ distribution
12.05%14.95%14.89%17.56%MIN.MEANMEDIANMAX.
Odds’ distribution
5.406.316.258.1018.52%15.84%16.00%12.35%MIN.MEANMEDIANMAX.
At the last prices before kickoff, Interquartile mean (Vetted List) estimated these probabilities for Head to Head: Marta Kostyuk (Local): 85.21%; Sloane Stephens (Visit): 14.79%. For Sloane Stephens (Visit), that estimate was equivalent to fair decimal odds of 6.76. 8 bookmakers offered closing odds above that level; the best were 8.10, corresponding to a positive expected value of +19.80%.
Sportsbook Odds (64 sportsbooks)
We're not affiliated with any bookmaker, we earn nothing from any action done with them.
| Bookmaker | Local | Visit ▼ | Margin | Updated |
|---|---|---|---|---|
| 1xBet🎯 | 1.11I 90.09%NM 87.95%EV -5.42%E -4.88%K -49.24%G +0.000% | 8.10I 12.35%NM 12.05%EV +19.80%E +2.44%K +2.79%G +0.552% | 2.4% | 2026-08-18 18:53 |
| Winamax (DE)🎯 | 1.12I 89.29%NM 86.62%EV -4.56%E -4.08%K -38.04%G +0.000% | 7.25I 13.79%NM 13.38%EV +7.22%E +0.996%K +1.16%G +0.084% | 3.1% | 2026-08-18 18:49 |
| Coolbet🎯 | 1.12I 89.29%NM 86.62%EV -4.56%E -4.08%K -38.04%G +0.000% | 7.25I 13.79%NM 13.38%EV +7.22%E +0.996%K +1.16%G +0.084% | 3.1% | 2026-08-18 18:50 |
| DraftKings🎯 | 1.11I 90.09%NM 86.48%EV -5.42%E -4.88%K -49.24%G +0.000% | 7.10I 14.08%NM 13.52%EV +5.01%E +0.705%K +0.821%G +0.041% | 4.2% | 2026-08-18 19:05 |
| Pinnacle🎯 | 1.13I 88.50%NM 86.22%EV -3.71%E -3.29%K -28.56%G +0.000% | 7.07I 14.14%NM 13.78%EV +4.56%E +0.645%K +0.752%G +0.034% | 2.6% | 2026-08-18 18:10 |
| Betway🎯 | 1.10I 90.91%NM 86.42%EV -6.27%E -5.70%K -62.69%G +0.000% | 7.00I 14.29%NM 13.58%EV +3.53%E +0.504%K +0.588%G +0.021% | 5.2% | 2026-08-18 19:05 |
| LowVig.ag🎯 | 1.12I 89.29%NM 86.02%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.89I 14.51%NM 13.98%EV +1.90%E +0.276%K +0.323%G +0.006% | 3.8% | 2026-08-18 18:50 |
| BetOnline.ag🎯 | 1.12I 89.29%NM 86.02%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.89I 14.51%NM 13.98%EV +1.90%E +0.276%K +0.323%G +0.006% | 3.8% | 2026-08-18 18:50 |
| Winamax (FR)🎯 | 1.11I 90.09%NM 85.88%EV -5.42%E -4.88%K -49.24%G +0.000% | 6.75I 14.81%NM 14.12%EV -0.171%E -0.025%K -0.030%G +0.000% | 4.9% | 2026-08-18 07:54 |
| Bovada🎯 | 1.11I 90.09%NM 85.88%EV -5.42%E -4.88%K -49.24%G +0.000% | 6.75I 14.81%NM 14.12%EV -0.171%E -0.025%K -0.030%G +0.000% | 4.9% | 2026-08-18 18:19 |
| Unibet (FR)🎯 | 1.11I 90.09%NM 85.79%EV -5.42%E -4.88%K -49.24%G +0.000% | 6.70I 14.93%NM 14.21%EV -0.910%E -0.136%K -0.160%G +0.000% | 5.0% | 2026-08-18 18:50 |
| Tipico (DE)🎯 | 1.07I 93.46%NM 86.23%EV -8.82%E -8.25%K -126.07%G +0.000% | 6.70I 14.93%NM 13.77%EV -0.910%E -0.136%K -0.160%G +0.000% | 8.4% | 2026-08-18 06:49 |
| GTbets🎯 | 1.11I 90.09%NM 85.70%EV -5.42%E -4.88%K -49.24%G +0.000% | 6.65I 15.04%NM 14.30%EV -1.65%E -0.248%K -0.292%G +0.000% | 5.1% | 2026-08-18 18:55 |
| BetUS🎯 | 1.11I 90.09%NM 85.58%EV -5.42%E -4.88%K -49.24%G +0.000% | 6.59I 15.17%NM 14.42%EV -2.54%E -0.385%K -0.454%G +0.000% | 5.3% | 2026-08-18 18:50 |
| LeoVegas🎯 | 1.11I 90.09%NM 85.41%EV -5.42%E -4.88%K -49.24%G +0.000% | 6.50I 15.38%NM 14.59%EV -3.87%E -0.595%K -0.703%G +0.000% | 5.5% | 2026-08-18 19:05 |
| 888sport🎯 | 1.11I 90.09%NM 85.41%EV -5.42%E -4.88%K -49.24%G +0.000% | 6.50I 15.38%NM 14.59%EV -3.87%E -0.595%K -0.703%G +0.000% | 5.5% | 2026-08-18 18:05 |
| William Hill🎯 | 1.11I 90.09%NM 85.41%EV -5.42%E -4.88%K -49.24%G +0.000% | 6.50I 15.38%NM 14.59%EV -3.87%E -0.595%K -0.703%G +0.000% | 5.5% | 2026-08-18 18:05 |
| Ladbrokes (UK)🎯 | 1.11I 90.09%NM 85.41%EV -5.42%E -4.88%K -49.24%G +0.000% | 6.50I 15.38%NM 14.59%EV -3.87%E -0.595%K -0.703%G +0.000% | 5.5% | 2026-08-18 18:05 |
| Coral🎯 | 1.11I 90.09%NM 85.41%EV -5.42%E -4.88%K -49.24%G +0.000% | 6.50I 15.38%NM 14.59%EV -3.87%E -0.595%K -0.703%G +0.000% | 5.5% | 2026-08-18 18:05 |
| 888sport (SE)🎯 | 1.11I 90.09%NM 85.41%EV -5.42%E -4.88%K -49.24%G +0.000% | 6.50I 15.38%NM 14.59%EV -3.87%E -0.595%K -0.703%G +0.000% | 5.5% | 2026-08-18 18:05 |
| Mr Green (SE)🎯 | 1.11I 90.09%NM 85.41%EV -5.42%E -4.88%K -49.24%G +0.000% | 6.50I 15.38%NM 14.59%EV -3.87%E -0.595%K -0.703%G +0.000% | 5.5% | 2026-08-18 18:05 |
| NordicBet🎯 | 1.10I 90.91%NM 85.53%EV -6.27%E -5.70%K -62.69%G +0.000% | 6.50I 15.38%NM 14.47%EV -3.87%E -0.595%K -0.703%G +0.000% | 6.3% | 2026-08-18 19:05 |
| Unibet (UK)🎯 | 1.10I 90.91%NM 85.53%EV -6.27%E -5.70%K -62.69%G +0.000% | 6.50I 15.38%NM 14.47%EV -3.87%E -0.595%K -0.703%G +0.000% | 6.3% | 2026-08-18 18:50 |
| Betsson🎯 | 1.10I 90.91%NM 85.53%EV -6.27%E -5.70%K -62.69%G +0.000% | 6.50I 15.38%NM 14.47%EV -3.87%E -0.595%K -0.703%G +0.000% | 6.3% | 2026-08-18 19:05 |
| ReBet🎯 | 1.10I 90.91%NM 85.53%EV -6.27%E -5.70%K -62.69%G +0.000% | 6.50I 15.38%NM 14.47%EV -3.87%E -0.595%K -0.703%G +0.000% | 6.3% | 2026-08-18 19:05 |
| betfred_uk🎯 | 1.10I 90.91%NM 85.53%EV -6.27%E -5.70%K -62.69%G +0.000% | 6.50I 15.38%NM 14.47%EV -3.87%E -0.595%K -0.703%G +0.000% | 6.3% | 2026-08-18 18:10 |
| Fanatics🎯 | 1.12I 89.29%NM 85.11%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.40I 15.63%NM 14.89%EV -5.35%E -0.835%K -0.990%G +0.000% | 4.9% | 2026-08-18 19:05 |
| Fliff🎯 | 1.08I 92.59%NM 85.46%EV -7.97%E -7.38%K -99.66%G +0.000% | 6.35I 15.75%NM 14.54%EV -6.09%E -0.958%K -1.14%G +0.000% | 8.3% | 2026-08-18 19:05 |
| Virgin Bet🎯 | 1.12I 89.29%NM 84.80%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.25I 16.00%NM 15.20%EV -7.57%E -1.21%K -1.44%G +0.000% | 5.3% | 2026-08-18 10:09 |
| Unibet (SE)🎯 | 1.12I 89.29%NM 84.80%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.25I 16.00%NM 15.20%EV -7.57%E -1.21%K -1.44%G +0.000% | 5.3% | 2026-08-18 10:04 |
| LiveScore Bet🎯 | 1.12I 89.29%NM 84.80%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.25I 16.00%NM 15.20%EV -7.57%E -1.21%K -1.44%G +0.000% | 5.3% | 2026-08-18 10:09 |
| LeoVegas (SE)🎯 | 1.12I 89.29%NM 84.80%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.25I 16.00%NM 15.20%EV -7.57%E -1.21%K -1.44%G +0.000% | 5.3% | 2026-08-18 10:04 |
| Casumo🎯 | 1.12I 89.29%NM 84.80%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.25I 16.00%NM 15.20%EV -7.57%E -1.21%K -1.44%G +0.000% | 5.3% | 2026-08-18 10:09 |
| TABtouch🎯 | 1.12I 89.29%NM 84.80%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.25I 16.00%NM 15.20%EV -7.57%E -1.21%K -1.44%G +0.000% | 5.3% | 2026-08-18 10:05 |
| Grosvenor🎯 | 1.12I 89.29%NM 84.80%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.25I 16.00%NM 15.20%EV -7.57%E -1.21%K -1.44%G +0.000% | 5.3% | 2026-08-18 10:05 |
| BetRivers🎯 | 1.12I 89.29%NM 84.80%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.25I 16.00%NM 15.20%EV -7.57%E -1.21%K -1.44%G +0.000% | 5.3% | 2026-08-18 10:10 |
| Unibet (NL)🎯 | 1.12I 89.29%NM 84.80%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.25I 16.00%NM 15.20%EV -7.57%E -1.21%K -1.44%G +0.000% | 5.3% | 2026-08-18 10:05 |
| Unibet🎯 | 1.12I 89.29%NM 84.80%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.25I 16.00%NM 15.20%EV -7.57%E -1.21%K -1.44%G +0.000% | 5.3% | 2026-08-18 10:04 |
| ATG (SE)🎯 | 1.12I 89.29%NM 84.80%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.25I 16.00%NM 15.20%EV -7.57%E -1.21%K -1.44%G +0.000% | 5.3% | 2026-08-18 10:04 |
| Bally Bet🎯 | 1.12I 89.29%NM 84.80%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.25I 16.00%NM 15.20%EV -7.57%E -1.21%K -1.44%G +0.000% | 5.3% | 2026-08-18 10:10 |
| betPARX🎯 | 1.12I 89.29%NM 84.80%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.25I 16.00%NM 15.20%EV -7.57%E -1.21%K -1.44%G +0.000% | 5.3% | 2026-08-18 10:04 |
| Svenska Spel🎯 | 1.12I 89.29%NM 84.80%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.25I 16.00%NM 15.20%EV -7.57%E -1.21%K -1.44%G +0.000% | 5.3% | 2026-08-18 10:10 |
| Hard Rock Bet🎯 | 1.12I 89.29%NM 84.80%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.25I 16.00%NM 15.20%EV -7.57%E -1.21%K -1.44%G +0.000% | 5.3% | 2026-08-18 10:05 |
| Betr (AU)🎯 | 1.11I 90.09%NM 84.92%EV -5.42%E -4.88%K -49.24%G +0.000% | 6.25I 16.00%NM 15.08%EV -7.57%E -1.21%K -1.44%G +0.000% | 6.1% | 2026-08-18 12:00 |
| BetMGM🎯 | 1.11I 90.09%NM 84.92%EV -5.42%E -4.88%K -49.24%G +0.000% | 6.25I 16.00%NM 15.08%EV -7.57%E -1.21%K -1.44%G +0.000% | 6.1% | 2026-08-18 18:00 |
| PointsBet (AU)🎯 | 1.10I 90.91%NM 85.03%EV -6.27%E -5.70%K -62.69%G +0.000% | 6.25I 16.00%NM 14.97%EV -7.57%E -1.21%K -1.44%G +0.000% | 6.9% | 2026-08-18 19:05 |
| FanDuel🎯 | 1.13I 88.50%NM 84.58%EV -3.71%E -3.29%K -28.56%G +0.000% | 6.20I 16.13%NM 15.42%EV -8.30%E -1.34%K -1.60%G +0.000% | 4.6% | 2026-08-18 19:05 |
| BetAnything🎯 | 1.12I 89.29%NM 84.70%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.20I 16.13%NM 15.30%EV -8.30%E -1.34%K -1.60%G +0.000% | 5.4% | 2026-08-18 06:49 |
| theScore Bet🎯 | 1.12I 89.29%NM 84.27%EV -4.56%E -4.08%K -38.04%G +0.000% | 6.00I 16.67%NM 15.73%EV -11.26%E -1.88%K -2.25%G +0.000% | 6.0% | 2026-08-18 09:50 |
| Bet Victor🎯 | 1.10I 90.91%NM 84.51%EV -6.27%E -5.70%K -62.69%G +0.000% | 6.00I 16.67%NM 15.49%EV -11.26%E -1.88%K -2.25%G +0.000% | 7.6% | 2026-08-18 19:03 |
| betano_uk🎯 | 1.10I 90.91%NM 84.51%EV -6.27%E -5.70%K -62.69%G +0.000% | 6.00I 16.67%NM 15.49%EV -11.26%E -1.88%K -2.25%G +0.000% | 7.6% | 2026-08-18 19:03 |
| PMU (FR)🎯 | 1.10I 90.91%NM 84.51%EV -6.27%E -5.70%K -62.69%G +0.000% | 6.00I 16.67%NM 15.49%EV -11.26%E -1.88%K -2.25%G +0.000% | 7.6% | 2026-08-18 10:09 |
| Betclic (FR)🎯 | 1.09I 91.74%NM 84.18%EV -7.12%E -6.53%K -79.12%G +0.000% | 5.80I 17.24%NM 15.82%EV -14.22%E -2.45%K -2.96%G +0.000% | 9.0% | 2026-08-18 19:03 |
| Neds🎯 | 1.12I 89.29%NM 83.70%EV -4.56%E -4.08%K -38.04%G +0.000% | 5.75I 17.39%NM 16.30%EV -14.96%E -2.60%K -3.15%G +0.000% | 6.7% | 2026-08-18 18:05 |
| Ladbrokes (AU)🎯 | 1.12I 89.29%NM 83.70%EV -4.56%E -4.08%K -38.04%G +0.000% | 5.75I 17.39%NM 16.30%EV -14.96%E -2.60%K -3.15%G +0.000% | 6.7% | 2026-08-18 18:00 |
| Paddy Power🎯 | 1.14I 87.72%NM 82.83%EV -2.86%E -2.51%K -20.43%G +0.000% | 5.50I 18.18%NM 17.17%EV -18.66%E -3.39%K -4.15%G +0.000% | 5.9% | 2026-08-18 19:05 |
| Sky Bet🎯 | 1.14I 87.72%NM 82.83%EV -2.86%E -2.51%K -20.43%G +0.000% | 5.50I 18.18%NM 17.17%EV -18.66%E -3.39%K -4.15%G +0.000% | 5.9% | 2026-08-18 19:05 |
| PlayUp🎯 | 1.14I 87.72%NM 82.83%EV -2.86%E -2.51%K -20.43%G +0.000% | 5.50I 18.18%NM 17.17%EV -18.66%E -3.39%K -4.15%G +0.000% | 5.9% | 2026-08-18 18:09 |
| BoyleSports🎯 | 1.14I 87.72%NM 82.83%EV -2.86%E -2.51%K -20.43%G +0.000% | 5.50I 18.18%NM 17.17%EV -18.66%E -3.39%K -4.15%G +0.000% | 5.9% | 2026-08-17 10:14 |
| Betfair Sportsbook (UK)🎯 | 1.14I 87.72%NM 82.83%EV -2.86%E -2.51%K -20.43%G +0.000% | 5.50I 18.18%NM 17.17%EV -18.66%E -3.39%K -4.15%G +0.000% | 5.9% | 2026-08-18 19:05 |
| TAB🎯 | 1.13I 88.50%NM 82.96%EV -3.71%E -3.29%K -28.56%G +0.000% | 5.50I 18.18%NM 17.04%EV -18.66%E -3.39%K -4.15%G +0.000% | 6.7% | 2026-08-18 18:05 |
| Caesars🎯 | 1.12I 89.29%NM 83.08%EV -4.56%E -4.08%K -38.04%G +0.000% | 5.50I 18.18%NM 16.92%EV -18.66%E -3.39%K -4.15%G +0.000% | 7.5% | 2026-08-18 18:55 |
| Marathon Bet🎯 | 1.15I 86.96%NM 82.44%EV -2.01%E -1.75%K -13.39%G +0.000% | 5.40I 18.52%NM 17.56%EV -20.14%E -3.73%K -4.58%G +0.000% | 5.5% | 2026-08-18 19:04 |
| SportsBet🎯 | 1.13I 88.50%NM 82.70%EV -3.71%E -3.29%K -28.56%G +0.000% | 5.40I 18.52%NM 17.30%EV -20.14%E -3.73%K -4.58%G +0.000% | 7.0% | 2026-08-18 19:05 |
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 (7)
| Bookmaker | Local | Visit | Margin ▲ | Updated |
|---|---|---|---|---|
| Betfair Exchange (AU)◎ | 1.17I 85.47%NM 85.32% | 6.80I 14.71%NM 14.68% | 0.2% | 2026-08-18 19:05 |
| Betfair Exchange (UK)◎ | 1.17I 85.47%NM 85.32% | 6.80I 14.71%NM 14.68% | 0.2% | 2026-08-18 19:05 |
| Matchbook◎ | 1.17I 85.47%NM 85.32% | 6.80I 14.71%NM 14.68% | 0.2% | 2026-08-18 19:05 |
| ProphetX◎ | 1.17I 85.47%NM 84.94% | 6.60I 15.15%NM 15.06% | 0.6% | 2026-08-18 19:05 |
| Betfair Exchange (EU)◎ | 1.17I 85.47%NM 84.54% | 6.40I 15.63%NM 15.46% | 1.1% | 2026-08-18 19:05 |
| Novig◎ | 1.15I 86.96%NM 85.29% | 6.67I 14.99%NM 14.71% | 1.9% | 2026-08-18 19:05 |
| Smarkets◎ | 1.15I 86.96%NM 84.77% | 6.40I 15.63%NM 15.23% | 2.6% | 2026-08-18 19:05 |