Marta Kostyuk vs Sloane Stephens

The market has already made up its mind on Marta Kostyuk v Sloane Stephens in the WTA Tour (Tue, Aug 18, 08:00 AM): stripping bookmaker margin out of 6 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 DraftKings; Sloane Stephens pays up to 6.70 at FanDuel. Average margin on this match is 5.4% — anything above fair value is worth taking, anything below it is paying the bookmaker's spread.

Watch the move on away: it opened at 5.70 and now trades at 6.70 (+17.5%). Line movement of this size usually means new information or heavy one-sided volume — check the odds table below before locking a price.