 Complete the following phrase:  Wickmayer started her US Open Series at the Citi Open where she was the seventh seed. She reached the final after wins over Madison Brengle, Zhang Shuai, fourth seed Kristina Mladenovic, and sixth seed Yulia Putintseva. In the final, she defeated Lauren Davis in straight sets. This was Wickmayers fifth career WTA Tour singles title. In doubles, partnering with Monica Niculescu, she and Niculescu both won the 2016 Citi Open doubles title defeating Shuko AoyamaRisa Ozaki in the final. Ranked 36 at the Rogers Cup, Wickmayer lost in the first round to qualifier Kristina Kučová. Representing Belgium at the 