Kiki Bertens naar halve finale WTA Finals na opgave Naomi Osaka | Sportnieuws
Live Tennis on Twitter: "Petra #Kvitova and Kiki #Bertens meet for the second straight week, with the winner advancing to a maiden Cincinnati final! Preview >>> https://t.co/1jLvghPYGp https://t.co/tM1l03HaLF" / Twitter
Kiki Bertens named Netherlands' player of the year
Nuremberg, Germany. 24th May, 2017. Dutch tennis player Kiki Bertens plays against the German A. Beck during the eighth-finals of the WTA Tournament in Nuremberg, Germany, 24 May 2017. Photo: Daniel Karmann/dpa/Alamy