(Reuters) - Rafa Nadal failed to reach a final for only the second time during his incredible 2013 season after being blown off court 6-2 6-4 by Argentine whirlwind Juan Martin Del Potro at the Shanghai Masters on Saturday.
The Spaniard had been hoping to celebrate his return to the top of the world rankings this week by setting up a final showdown for the second time in as many weeks with chief rival Novak Djokovic.
