On Double-mini.
Ulf Andersson posted grainy footage of Brett Austine (AUS) at Worlds Bozeman, Montana 1982.
… Brett became the first person ever to compete a triple on DMT, then on trampoline where he does an extremely difficult routine, including 4 triples (not all the skills are all that…..’conventional’). …
Click PLAY or watch it on Facebook.
https://www.facebook.com/video/embed?video_id=10151294697690079
In fact, Brett finished 5th on Trampoline with that routine.
Gymnastics Coaching.com 