Juan Martin del Potro suffered a shock defeat in the China Open final on Sunday, losing 6-4, 6-4 to unseeded Nikoloz Basilashvili of Georgia. The Argentine top seed has been suffering with a cold in Beijing, but it was not immediately clear how much that had hindered his performance. It is only the second title of 34th-ranked Basilashvili's career. The all-action 26-year-old immediately broke Del Potro's serve in the first game and appeared unfazed by his opponent's stellar reputation.