The Wide World Of Sports commentator passed away on Thursday morning at a nursing home on the NSW Central Coast after a battle with Alzheimer's disease, Channel Nine reports.
Channel Nine described Eastlake as a 'larger-than-life personality who called rugby league matches and motorsports, as well as weightlifting and the Commonwealth and Olympic Games.
'His over-the-top descriptions and ability to hype up any event with his booming voice made him a favourite among sports fans.'
The TV and radio veteran was the voice of State Of Origin games in the 1980s and 1990s.
He had been fighting Alzheimer’s and emphysema for the past eight years.
Twitter has flooded with tributes to the Aussie icon.
Our thoughts are with Eastlake's family at this difficult time.