Tennis - WTA Tour singles standings

May 11 (Infostrada Sports) - Standings from the WTA Tour singles Points 1 (1) Serena Williams(U.S.) 10156 2 (2) Simona Halep(Romania) 7115 3 (3) Maria Sharapova(Russia) 6915 4 (4) Petra Kvitova(Czech Republic) 6670 5 (5) Caroline Wozniacki(Denmark) 4940 6 (6) Eugenie Bouchard(Canada) 4063 7 (7) Ana Ivanovic(Serbia) 3905 8 (8) Ekaterina Makarova(Russia) 3465 9 (10) Andrea Petkovic(Germany) 3315 10 (12) Carla Suarez Navarro(Spain) 3250 11 (11) Angelique Kerber(Germany) 3230 12 (13) Karolina Pli...