David Ferrer from Spain returns the ball during a Madrid Open tennis tournament match against Kei Nishikori from Japan in Madrid, Spain, Saturday, May 10, 2014. (AP Photo/Andres Kudacki)
Rafael Nadal from Spain returns the ball during a Madrid Open tennis tournament match against Roberto Bautista from Spain in Madrid, Spain, Saturday May 10, 2014 . (AP Photo/Daniel Ochoa de Olza)
Roberto Bautista from Spain returns the ball during a Madrid Open tennis tournament match against Rafael Nadal from Spain in Madrid, Spain, Saturday, May 10, 2014 . (AP Photo/Daniel Ochoa de Olza)
Kei Nishikori from Japan returns the ball during a Madrid Open tennis tournament match against David Ferrer from Spain in Madrid, Spain, Saturday, May 10, 2014. (AP Photo/Andres Kudacki)
Rafael Nadal from Spain returns the ball during a Madrid Open tennis tournament semifinal match against Roberto Bautista Agut from Spain in Madrid, Spain, Saturday, May 10, 2014. (AP Photo/Andres Kudacki)