Loose forward Miller was shunted over from a driving maul following an attacking line-out to snuff out an impressive Rebels fightback.
Professional rugby returned to Australia on Friday after a three-month hiatus due to the on-going covid-19 pandemic.
The Lions could be boosted further should the rumours be true that a number of former players are headed back to Joburg.
Former Springbok and Sharks hooker Chiliboy Ralepelle tested positive for banned anabolic substance Zeranol during an out-of-competition test.
The Hong Kong, Singapore, Langford, London and Paris legs were postponed, but World Rugby cancelled them after discussion with all of the host unions.
The World Cup final at Ellis Park on June 24th is obviously the defining moment of the 1995 World Cup, but when asked what my favourite moment was, then I always go back to that opening match at Newlands.
It was this week 25 years ago that, against all the odds, the Boks under Pienaar shocked the world by beating the hot favourites, New Zealand, in the final at Ellis Park.