With a nearly five-point lead heading into the final rotation, the U.S. completed its mission with poise, winning gold on Tuesday with a dominating mix of skill and showmanship under major pressure.<br />This was a second straight Olympic gold medal in the team event for the U.S. women and was the final international campaign for the legendary Martha Karolyi, the team’s national coordinator.<br />In 2012, the U.S. beat second-place Russia by more than five points.<br />This time, it was by an 8.2-point margin.