Richard Gasquet, of France, returns the ball to Kevin Anderson, of South Africa, during the Sony Open tennis tournament, Sunday, March 23, 2014, in Key Biscayne, Fla. (AP Photo/Luis M. Alvarez)
Feliciano Lopez, left, of Spain, greets Andy Murray, of Great Britain, after Murray's 6-4, 6-1 win at the Sony Open tennis tournament in Key Biscayne, Fla., Sunday, March 23, 2014. (AP Photo/Alan Diaz)
Tomas Berdych, of the Czech Republic, returns the ball to Joao Sousa, of Portugal, at the Sony Open Tennis tournament in Key Biscayne, Fla., Monday, March 24, 2014. (AP Photo/Joel Auerbach)
John Isner, of the United States, returns the ball to Nicolas Almagro, of Spain, during the Sony Open Tennis in Key Biscayne, Fla., Monday, March 24, 2014. (AP Photo/J Pat Carter)
Venus Williams, of the United States, reacts after losing a game to Dominika Cibulkova, of Slovakia, during the Sony Open Tennis in Key Biscayne, Fla., Monday, March 24, 2014. (AP Photo/J Pat Carter)
Venus Williams, of the United States, retuns the ball to Dominika Cibulkova, of Slovakia,during the Sony Open Tennis in Key Biscayne, Fla., Monday, March 24, 2014. (AP Photo/J Pat Carter)