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US Open 2015: Serena Williams defeated Kiki Bertens 7-6 6-3. | Tennis News | Sky Sports
Williams gets another shot at Muguruza
Serena Williams survives rocky match with Kiki Bertens - The Boston Globe
Kiki Bertens stuns Venus Williams at Wimbledon
Serena Williams of the U.S. celebrates after winning the first set against Kiki Bertens of the Netherlands during their second round match at the U.S. Open Championships tennis tournament in New York,
Serena WIlliams turns it on after slow start at U.S. Open
Venus Williams rallies past Kiki Bertens at Miami Open - NBC Sports
Williams breezes into U.S. Open's 2nd round
Kiki Bertens - Wikipedia
Venus Williams added to the pile of discarded seeds at Wimbledon by Kiki Bertens
Serena Williams beats Bertens to make French Open final - Eurosport
IBM Knows What Makes Serena Williams So Good | WIRED
Venus Williams upsets Kiki Bertens in Ohio; Serena withdraws - NBC Sports
Serena Williams battles through errors to beat Kiki Bertens at US Open | US Open tennis | The Guardian
Venus stuns holder Bertens in Cincinnati, Serena withdraws | Reuters.com