An Olympic spectator supporting Brazili watches a Rio 2016 Olympic Games tennis match with Rafael Nadal of Spain on the big screen at Germany’s public Olympic House called OliAle Pavillon on the beach of Leblon in Rio de Janeiro, Brazil, 12 August 2016. EPA/BARBARA WALTON

German fans as Angelique Kerber of Germany plays Madison Keys of the US during their Rio 2016 Olympic Games Women’s Singles match at the Olympic Tennis Centre in the Olympic Park in Rio de Janeiro, Brazil, 12 August 2016. EPA/MICHAEL REYNOLDS

Argentina fans as Juan Martin Del Potro of Argentina plays Roberto Bautista Agut of Spain during their Rio 2016 Olympic Games Men’s Singles match at the Olympic Tennis Centre in the Olympic Park in Rio de Janeiro, Brazil, 12 August 2016. EPA/MICHAEL REYNOLDS

Rafael Nadal (R) and Marc Lopez (L) of Spain celebrate on the medal stand after winning the gold medal in theRio 2016 Olympic Games Men’s Doubles at the Olympic Tennis Centre in the Olympic Park in Rio de Janeiro, Brazil, 12 August 2016. EPA/MICHAEL REYNOLDS

(L-R) Horia Tecau and Florin Mergea of Romania (silver), Marc Lopez and Rafael Nadal of Spain (gold) and Steve Johnson and Jack Sock of the US (bronze) on the medal stands after the Rio 2016 Olympic Games Men’s Doubles at the Olympic Tennis Centre in the Olympic Park in Rio de Janeiro, Brazil, 12 August 2016. EPA/MICHAEL REYNOLDS