Real Madrid's Costa Rican goalkeeper Keylor Navas (L), his wife Andrea Salas and Atletico Madrid's Spanish midfielder Saul Niguez (R) attend the ATP Madrid Open tennis tournament at the Caja Magica in Madrid on May 8, 2019. (Photo by Pierre-Philippe MARCOU / AFP via Getty Images)

Former chief executive of the Formula One Group British Bernie Ecclestone (L) and Romanian businessman Ion Tiriac attend the ATP Madrid Open tennis tournament at the Caja Magica in Madrid on May 8, 2019. (Photo by Pierre-Philippe MARCOU / AFP via Getty Images)

Spain's Rafael Nadal celebrates after beating Canada's Felix Auger Aliassime in their ATP Madrid Open tennis match at the Caja Magica in Madrid on May 8, 2019. (Photo by Pierre-Philippe MARCOU / AFP via Getty Images)

Former Brazilian footballer Ronaldo attends the ATP Madrid Open tennis tournament at the Caja Magica in Madrid on May 8, 2019. (Photo by Pierre-Philippe MARCOU / AFP via Getty Images)

Atletico de Madrid's Slovenian goalkeeper Jan Oblak (L) attends the ATP Madrid Open tennis tournament at the Caja Magica in Madrid on May 8, 2019. (Photo by Pierre-Philippe MARCOU / AFP via Getty Images)

Spain's Rafael Nadal returns the ball to Canada's Felix Auger Aliassime in their ATP Madrid Open tennis match at the Caja Magica in Madrid on May 8, 2019. (Photo by Pierre-Philippe MARCOU / AFP via Getty Images)

Spain's Rafael Nadal celebrates after beating Canada's Felix Auger Aliassime in their ATP Madrid Open tennis match at the Caja Magica in Madrid on May 8, 2019. (Photo by Pierre-Philippe MARCOU / AFP via Getty Images)

Spain's Rafael Nadal returns the ball to Canada's Felix Auger Aliassime during their ATP Madrid Open tennis match at the Caja Magica in Madrid on May 8, 2019. (Photo by Pierre-Philippe MARCOU / AFP via Getty Images)