Caroline Wozniacki claimed the biggest win of her comeback and a spot in the third round of the U.S. Open on Wednesday as the Dane’s Grand Slam adventure continued with an 7-5, 7-6 upset of 11th seed Petra Kvitova. Twice a finalist at Flushing Meadows, Wozniacki was back on the stage she has graced so many times against a familiar …
