'I can one day tell my grandkids that I played Rafa': Nadal retires, with an unreachable legacy

Rafael Nadal retires on Tuesday at the Davis Cup, after more than 20 years in pro tennis -- and with a record on clay that might never be surpassed.

'I can one day tell my grandkids that I played Rafa': Nadal retires, with an unreachable legacy
Rafael Nadal retires on Tuesday at the Davis Cup, after more than 20 years in pro tennis -- and with a record on clay that might never be surpassed.