Del Potro vs Rafael Nadal Declaraciones de Juan Martín Juegos Olimpicos Brasil 2016 Rafael Nadal takes on Juan Martin del Potro in the semi-final of the Rio 2016 Olympics on 13 August.Where to watch liveThe game is set to start at 5.30pm BST. The tennis matches of the Rio 2016 Olympics will be telecast live on BBC One, BBC Four and the BBC"s interactive Red Button service in the UK. In addition to this, there will be up...