MEMPHIS, Feb. 13 (UPI) --
Second-seeded Feliciano Lopez
of Spain was upended by Croatia's Ivo Karlovic
Thursday in second-round play at the U.S. National Indoor Championships.
Lopez, who finished second to Kei Nishikori at last year's event, was bounced by Karlovic 7-6 (7-2), 6-4 at the Racquet Club of Memphis.
Also Thursday, Australia's Lleyton Hewitt moved on to the quarterfinals, rallying past Cypriot wild card Marcos Baghdatis 1-6, 6-2, 6-0.
In other action, No. 4 seed Yen-Hsun Lu of Taiwan notched a 3-6, 6-3, 6-3 comeback win over American qualifier Denis Kudla, and Alex Kuznetsov of the United States upended No. 8 seed Mikhail Kukushkin of Kazakhstan 2-6, 6-3, 7-6 (7-1).
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