(front row L-R) Simona Halep of Romania, Angelique Kerber of Germany and Agnieszka Radwanska of Poland (Top Row L-R) Karolina Pliskova of Czech Republic, Garbine Muguruza of Spain, Madison Keys of the United States, Dominika Cibulkova of Slovakia attend the official draw ceremony prior to the WTA Finals Singapore at Marina Bay Sands on October 21, 2016 in Singapore.,Image: 303545885, License: Rights-managed, Restrictions: , Model Release: no