Sep 6, 2017; New York, NY, USA; Juan Martin del Potro of Argentina celebrates after match point against Roger Federer of Switzerland on day ten of the U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center. Mandatory Credit: Jerry Lai-USA TODAY Sports
NEW YORK (Reuters) - Juan Martin Del Potro has been enjoying the sweetest renaissance at the U.S. Open, but the Argentine is well aware that Rafa Nadal, his semi-final opponent on Friday, is the ultimate challenge, especially for a player whose main weapon is the forehand.
The 24th seed swept Roger Federer aside in four sets in the quarter-finals on Wednesday after coming from the brink to beat Austrian sixth seed Dominic Thiem in the previous round, his big serve and mighty forehand proving too hot for his rivals to handle.
