No. 2 seed and 2016 @bbtatlantaopen champion @k1ngkyrg1os leads the way on Day 4, advancing to the quarterfinals alongside @matt_ebden, @norriee and @baghdatis_official. Tell us who your pick is to take the title in Atlanta! _ #usopenseries #atp #nickkyrgios #marcosbaghdatis #cameronnorrie #mattebden #tennis #protennis #instatennis