Torrential downpours delayed the Clara man by 3 hours.
Shane Lowry's opening round at The Masters is underway.
Augusta National has not been a happy hunting ground for The Open champion - he's only made the cut once in four attempts and that was back in 2016.
However, the Clara man knows a victory this week may be the only thing to surpass his win at Royal Portrush:
He is playing alongside defending champion Tiger Woods and Andy Ogletree.
Woods says celebrating last year's win with his son was special:
Rory McIlroy's latest attempt to win a first green jacket in the company of world number-1 Dustin Johnson, and Patrick Cantlay.
Mallow amateur James Sugrue is partnered by two-time champion Jose Maria Olazabal and Andrew Putnam.