US Open: Stephens, Halep reach third round

The 2017 champion Sloane Stephens advanced to the third round of the US Open in women's singles with a dominant 6-4, 6-2 win over No.21 seed Coco Gauff in 66 minutes.With the roof closed on Arthur Ashe Stadium due to rain, Stephens saved the sole break point against the 17-year-old American, moving her record in the second round of Slams to an impressive 24-3. No.9 seed Garbiñe Muguruza of Spain turned around a very unfavourable head-to-head on Wednesday when she defeated Andrea Petkovic of Germany, 6-4, 6-2, to reach the third round. 

Two-time Grand Slam champion Muguruza had lost all three of her prior meetings with former World No.9 Petkovic, but their most recent clash came at Doha in 2016, over five years ago. 
Former World No.1 Muguruza finally got on the board in their rivalry with an 89-minute victory At the Louis Armstrong Stadium. The Spaniard moves into the third round in New York for, somewhat surprisingly, only the second time in her career.