Janice Tjen vs Mirra Andreeva

The market has already made up its mind on Janice Tjen v Mirra Andreeva in the WTA Tour (Tue, 18 Aug, 14:00): stripping bookmaker margin out of 1 price feeds gives Mirra Andreeva 78% against 22% for Janice Tjen.

Fair odds on Mirra Andreeva sit at 1.28; the best available price is 1.22 at Betway; Janice Tjen pays up to 4.25 at Betway. Average margin on this match is 5.5% — anything above fair value is worth taking, anything below it is paying the bookmaker's spread.