Beating the best tennis players in the world is not easy — especially on an empty stomach.
China's Zhang Shuai knows that better than most now.
Zhang chowed down on a sandwich on court between the second and third sets of her match against Caroline Garcia, putting away a few bites before going on the upset the world's 10th-ranked player 4-6, 7-6 (7-5), 7-6 (7-5) in the second round of the Pan Pacific Open on Wednesday.
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