Del Potro, Tursunov into Sydney semifinals
Tennis | Jan 09, 2014, 11:51 AM ISTSydney: Top-seeded Juan Martin del Potro beat Czech veteran Radek Stepanek 6-4, 3-6, 6-3 on Thursday to set up a Sydney International semifinal against Russia's Dmitry Tursunov. Del Potro, the 2009 U.S. Open champion who