It's a 67-million-to-one shot conquered by a 67-year-old and it's far less likely than being struck by lightning.
Jim Jackson should buy a lottery ticket after scoring two hole-in-ones in the same round at Capital Golf Club on Monday.
The ACT Veteran Golfers Association member began the day complaining of back pain, but that soon turned to elation when he left the putter in the bag at the seventh and 14th par-three holes.
According to nationalholeinoneregistry.com, the chances of golf's holy grail happening twice in one round are 67 million to one.
Starting on the back nine, Jackson, who only took up golf 15 years ago, aced the 80-metre 14th that requires a shot over water using a gap wedge.
He backed it up on the 130-metre seventh with a seven iron, the ball bouncing twice before hopping into the hole.
"In hindsight, it's a massive achievement, but I also realise it's a bit lucky as well," Jackson said without a hint of understatement.
"Normally you wouldn't have an 80-metre shot for a par-three. A couple of the guys in my group said that's really only half a hole-in-one.
"The reaction for the first one was a lot noisier than the second, we were all in shock on the second one.
"There was some high fives and we were a bit noisy, people were looking at us and knew something had happened.
"When I walked into the clubhouse word had got out and people said 'congrats on the hole in one'. I said 'no, I got two!' "
While it won him a couple of nearest-the-pin prizes and a story to boast about forever, Jackson's feat still wasn't enough to win the round.
The golfing gods got square somewhat the very next hole after his second-hole-in-one when he shanked it onto the greenkeeper's shed.
The 11-handicapper plays twice a week and took up the game after his body could no longer keep up in squash and soccer.
"I bought a round of drinks for my group and had a couple more scotch and dries, then went out to dinner and had a couple more," Jackson said.
"I had a lot more than I usually drink, but I thought if I can't do it after this, when can I?"
Remarkably, Jackson also scored a hole-in-one at his member club, Gungahlin Lakes, on the 170-metre fifth hole, in January.
He won $750 for the feat, but will have to be content with a plaque for his rare double at Capital.
"I hit a seven wood and it pitched once, hit the flag and bang, went straight down into the hole," Jackson said.
"A bloke [Scott Gardiner] won a Lexus [with a hole-in-one] at the Australian Open, my wife Beverley emailed the club vice-captain [Tony Wood] 'where's Jim's Lexus?'
"He sent an email back saying, 'we can borrow [Woods' wife] Sheila's 1992 Mazda if we want.' "