The defending-champion advanced after a 6-3, 6-3 win.
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The Croat is looking to duplicate his 2014 championship run
The Wimbledon finalist advanced past the Canadian 4-6 6-3 6-4 4-6 6-4
The top seed overcame a one-set deficit to win.
The 2016 US Open champion advanced 6-2, 5-7, 6-4
The 2009 US Open Champion is looking to make a return this year
The two-time finalist rolled past Daria Gavrilova in a second-round match
The Latvian has reached the quarterfinals in New York the last two years.
The top-seeded woman fell on the first day of the United States Open.
The American will look to take his momentum into the US Open next week.
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