Top-ranked defending champion Novak Djokovic cruised into the second round of the US Open while French Open champion Ashleigh Barty and third seed Karolina Pliskova struggled but advanced.
Serbian star Djokovic, who has won four of the past five Grand Slam singles titles, dispatched Spain's 76th-ranked Roberto Carballes Baena 6-4, 6-1, 6-4.
"Getting out of the blocks, it takes time for you to feel comfortable on the court," Djokovic said.
"Later in the sets I was able to take advantage in the big moments and move on and that's what's important."
"Zarina was able to put me in difficult positions. I just kept making good shots. I felt like I had good control and could put it in difficult spots on the court."
"Not happy that I lost three breaks of serve in a row. That's not possible for next time."
- Venus, Nishikori roll -
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