They are currently engaged in a storied rivalry , which many consider to be one of the greatest in tennis history .
The Federer -- Nadal rivalry is between two professional tennis players , Roger Federer of Switzerland and Rafael Nadal of Spain .
tennis players are currently engaged in a storied rivalry , which many consider to be one of the greatest in tennis history .
The Federer -- Nadal rivalry is between two professional tennis players , Roger Federer of Switzerland and Rafael Nadal of Spain .