Isner Opens Bid; Coric Makes Impressive Debut American No. 1 John Isner fired 26 aces as he began his US Open campaign with a 7-6(5), 6-2, 7-6(2) victory over reigning NCAA champion from UCLA, Marcos Giron, Tuesday at Flushing Meadows. [[More Tennis News on ATPWorldTour.com]] Author: sportallinfo Published: 26 agosto 2014 Categories: Tennis