Rafael Nadal of Spain serves to Fabio Fognini of Italy during their men's singles match at the French Open tennis tournament at the Roland Garros stadium in Paris June 1, 2013.REUTERS/Stephane Mahe
PARIS (Reuters) - Seven-times champion Rafael Nadal has been showing signs of nerves at the French Open, but Monday's fourth-round match against Kei Nishikori could be exactly what the doctor ordered for the Spanish third seed.
Although Nadal, who will celebrate his 27th birthday on Monday, has dubbed the 13th seed a "fantastic player", the Japanese has lost all of his four matches against the claycourt machine.
