George Gregan claims Ireland should take inspiration from golfer Cam Smith in their bid to break through that Rugby World Cup quarter-final barrier for the first time.
Gregan was present at St Andrew's in July to witness Smith, a fellow Aussie, claw back a three-shot deficit with nine holes left to wreck McIlroy's dream of winning the British Open for a second time.
World Cup winner Gregan believes that Smith's career-best display in that final round is the kind of performance Ireland need if, as expected, they meet either the hosts or the All Blacks in the last eight at France 2023.
