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Marta Kostyuk vs Sloane Stephens

WTA Tour · Tue, Aug 18, 08:00 a.m.

The market has already made up its mind on Marta Kostyuk v Sloane Stephens in the WTA Tour (Tue, Aug 18, 08:00 a.m.): stripping bookmaker margin out of 10 price feeds gives Marta Kostyuk 85% against 15% for Sloane Stephens.

Fair odds on Marta Kostyuk sit at 1.18; the best available price is 1.13 at Unibet; Sloane Stephens pays up to 7.03 at Pinnacle. Average margin on this match is 5.5% — anything above fair value is worth taking, anything below it is paying the bookmaker's spread.

Watch the move on away: it opened at 5.00 and now trades at 5.75 (+15.0%). Line movement of this size usually means new information or heavy one-sided volume — check the odds table below before locking a price.

Implied probability
Marta Kostyuk 85% Sloane Stephens 15%

1X2 / Moneyline

Operator12
Unibet1.130.025.750.75Compare Odds
DraftKings1.130.036.240.86Compare Odds
Pinnacle1.137.030.34Compare Odds
FanDuel1.120.036.701.00Compare Odds
Betway1.120.036.000.75Compare Odds
BetMGM1.120.076.001.40Compare Odds
BetRivers1.120.056.101.10Compare Odds
LeoVegas1.110.035.500.50Compare Odds
888sport1.110.066.501.50Compare Odds
Caesars Sportsbook1.116.00Compare Odds