Open sidelines
China Daily | Updated: 2015-09-04 08:17
Practice makes perfect
Serena Williams was barely done with her second-round victory over Dutch qualifier Kiki Bertens when the world No 1 went back out to the practice courts to work on her serve with coach Patrick Mouratoglou. Williams had 10 double faults against Bertens, including four in one game.
Break for Daria
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