Factbox: Five things to watch out for on Day 2 of U.S. Open
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NEW YORK (Reuters) - Five things to watch out for on day two of the U.S. Open on Tuesday.
Aug 28, 2017; New York, NY, USA; Maria Sharapova of Russia serves against Simona Halep of Romania (not pictured) on day one of the U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center. Mandatory Credit: Geoff Burke-USA TODAY Sports
Reporting by Rory Carroll; Editing by Peter Rutherford