Serena Williams reaches for a serve by Coco Vandeweghe at the Sony Open tennis tournament, Monday, March 24, 2014, in Key Biscayne, Fla. (AP Photo/Lynne Sladky)
Maria Sharapova, of Russia, right, shakes hands with Kirsten Flipkens, of Belgium, after winning 3-6, 6-4, 6-1 at the Sony Open tennis tournament, Monday, March 24, 2014, in Key Biscayne, Fla. (AP Photo/Lynne Sladky)
Maria Sharapova, of Russia, waves after defeating Kirsten Flipkens, of Belgium, 3-6, 6-4, 6-1, at the Sony Open tennis tournament, Monday, March 24, 2014, in Key Biscayne, Fla. (AP Photo/Lynne Sladky)