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Simona Halep, the reigning Wimbledon champion and world number one at the time, was defeated by Hsieh Su-wei in the third round of the 2018 Wimbledon Championships. Hsieh, a Taiwanese player ranked 88th in the world, upset Halep in straight sets, 6-3, 6-4, becoming the first player to defeat a reigning Wimbledon champion in the third round since 1995.