cincinnati open

Defending champion: Kiki Bertens Former Western & Southern Open champions, who will participating in the 2019 tournament: Serena Williams (2014-15), Maria Sharapova (2011), Victoria Azarenka (2013), Karolina Pliskova (2016), Garbine Muguruza (2017) Official website: http://www.wsopen.com/...