11 from 2 nations competed in Australian Open . It was held in May 18–23 . 1977 is when Australian Open was established  . 17 teams participated in Australian Open . The no. of events in sport was 6 . The sport has the official site www.hardrock100.com . The venue for Australian Open was Fort Copacabana, Pontal (Road),Australia)
There were less than 10 games in Australian Open