Nishikori upsets top-seeded Cilic to re

Nishikori upsets top-seeded Cilic to reach semis
AP - Sports
Michael Russell, of the United States, returns a shot to Denis Istomin, of Uzbekistan, in a quarterfinal at the U.S. National Indoor Championships tennis tournament Friday, Feb. 22, 2013, in Memphis, Tenn. (AP Photo/Mark Humphrey)
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