Wimbledon winner Venus Williams cruised into the third round with a straight-set victory.
US 12th seed Williams took 69 minutes to eliminate Romania's 84th-ranked Ioana Raluca Olaru 6-4, 6-2.
"I missed a few shots that were easy but ultimately it's important to get to the next round. I think my game will be there," Williams said. "I'm not stressed out over a few shots. It was good."
Williams will next face either Greece's Eleni Daniilidou or Ukrainian Alona Bondarenko.
US Open: Complete Coverage
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