US Open was established on 2005 . The no. of events in sport was 8 . 24 (from 5 confederations) were the number of teams who competed in US Open . The venue for US Open was Riocentro – Pavilion 6 . 64 from 25 nations competed in US Open . The sport has the official site www.hardrock100.com
There are more than 28 teams in sport US Open