Novak Djokovic cruised into the third round with a straight sets win over Denis Kudla. The world number one needed 93 minutes to beat the American 6-3 6-2 6-2. Stan Wawrinka was a second-round casualty at the hands of Reilly Opelka. The big-serving American fought back to beat the Swiss 8-6 in the 5th set. The fairytale continues for Cori Gauff who beat Magdalena Rybarikova. She's the youngest to reach the 3rd round since a 15-year-old Jennifer Capriati in 1991. Gauff could play Simona Halep in round 4. 3rd seed Karolina Pliskova also had no problems against Monica Puig 6-0, 6-4.