President Barack Obama speaks during a meeting with Spanish Prime Minister Mariano Rajoy in the Oval Office of the White House in Washington, Monday, Jan. 13, 2014. (AP Photo/Jacquelyn Martin)
Bernard Tomic of Australia talks to medical staff during his first round match against Rafael Nadal of Spain at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 14, 2014.(AP Photo/Eugene Hoshiko)
Sweat drips from the face of Rafael Nadal of Spain during a break in his first round match against Bernard Tomic of Australia at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 14, 2014.(AP Photo/Rick Rycroft)