John Isner of the U.S. rests as he plays Gilles Muller of Luxembourg during their third round match at the Australian Open in Melbourne, Australia, Saturday, Jan. 24, 2015.
John Isner of the U.S. rests as he plays Gilles Muller of Luxembourg during their third round match at the Australian Open in Melbourne, Australia, Saturday, Jan. 24, 2015. Andy Brownbill AP
John Isner of the U.S. rests as he plays Gilles Muller of Luxembourg during their third round match at the Australian Open in Melbourne, Australia, Saturday, Jan. 24, 2015. Andy Brownbill AP

Delray Beach Open to feature four top-ranked U.S. tennis players

February 13, 2015 11:17 PM

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