Spanish tennis player Rafael Nadal returns a ball to Portuguese tennis player Joao Sousa during the Madrid Open tournament at the Caja Magica (Magic Box) sports complex in Madrid on May 6, 2016. (Photo by JAVIER SORIANO / AFP via Getty Images)
Spanish tennis player Rafael Nadal returns a ball to Portuguese tennis player Joao Sousa during the Madrid Open tournament at the Caja Magica (Magic Box) sports complex in Madrid on May 6, 2016. (Photo by JAVIER SORIANO / AFP via Getty Images)