World number one Rafael Nadal has crashed out of the Shanghai Masters tennis tournament. In Shanghai yesterday, an inspired Argentine Juan Martin del Potro blew the Spaniard away with a relentless display of brutal hitting. Del Potro won in straight sets 6-2, 6-4. In the final, Del Potro will clash with top seeded Novak Djokovic. Serbia's Djokovic swept aside Jo-Wilfried Tsonga 6-2, 7-5 to earn the chance to defend his title.