WTA Cincinnati draw: Emma Raducanu to opener against Serena Williams, Iga Swiatek threatens duel with Sloane Stephens

Another excellent field of participants at a WTA 1000 event: From Monday, the first 16 in the world rankings will all be in action in Cincinnati. Iga Swiatek is leading the field in Ohio, the draw has already revealed a number of top duels in round one.