Question: who has won the last year's women's singles title at the us open
Answer: , Victoria Victoria Azarenka 6 -- 2 , 2 -- 6 , 7 -- 5 2013 USA Williams , Serena Serena Williams ( 5 ) BLR Azarenka , Victoria Victoria Azarenka 7 -- 5 , 6 -- 7 , 6 -- 1 2014 USA Williams , Serena Serena Williams ( 6 ) DEN Wozniacki , Caroline Caroline Wozniacki 6 -- 3 , 6 -- 3 2015 ITA Pennetta , Flavia Flavia Pennetta ITA Vinci , Roberta Roberta Vinci 7 -- 6 , 6 -- 2 2016 GER Kerber , Angelique Angelique Kerber CZE Plíšková , Karolína Karolína Plíšková 6 -- 3 , 4 -- 6 , 6 -- 4 2017 USA Stephens , Sloane Sloane Stephens USA Keys , Madison Madison Keys 6 -- 3 , 6 -- 0