116 from 13 nations competed in US Open . 5 August was when it was held . The official site of US Open is chicagomarathon.com . 14 events were there in US Open . 12 were the number of teams who competed in US Open . US Open was established on 1992 . The venue for US Open was New York City, New York,,United States,Maria Lenk Aquatic Center
US Open was established 28 years ago