Marta Kostyuk vs Sloane Stephens

The market has already made up its mind on Marta Kostyuk v Sloane Stephens in the WTA Tour (Tue, 18 Aug, 10:00 pm): stripping bookmaker margin out of 2 price feeds gives Marta Kostyuk 84% against 16% for Sloane Stephens.

Fair odds on Marta Kostyuk sit at 1.19; the best available price is 1.13 at Unibet; Sloane Stephens pays up to 6.00 at Ladbrokes. 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.