Queenslander Peter Senior said he might have to rethink his retirement plans after rolling back the years to win his third Australian Masters title at Huntingdale at the age of 56.
Senior, who plays the majority of his golf on the Champions Tour in the United States, became the oldest winner of a gold jacket, eclipsing the mark set by 50-year-old American Gene Littler in 1980.
He finished the tournament at eight-under after his final-round three-under 68.
Senior said he had been considering giving up the game in a year but after collecting his first gold jacket in 20 years - he won his first in 1991 - he said retirement might be put on hold.
"I said I was going to play one more year and then I am going to give it away," he told ABC Sport.
"So I might have to sit down and rethink that a little bit."
Senior had his son Mitch on the bag this weekend and he was full of praise for the job he had done.
"Mitch has caddied for me for five years now, mainly on the Champions Tour," he said.
"But he was on the bag for the Australian Open win in 2012 and he does one hell of a job and he's got better and better every year.
"I couldn't do it without him."
Senior moved out to nine-under par in his final round but he need a clutch par putt on the 18th to finish on eight-under.
He said the final few holes had been a struggle, but he was able to hold it together.
"The last few holes I was leaking a bit of oil," he said.
"But I played pretty solid for most of the day."
New South Welshman Andrew Evans just missed out on at least taking the final day to a playoff.
After Senior bogeyed on the 17th, Evans could have levelled with the veteran but failed to make a difficult putt on the 17th to bogey and a three-putt on the last meant he dropped to six-under, to a tie for second place alongside another Queenslander John Senden and American amateur Bryson DeChambeau.
Senior began his final round in style with birdies on his first two holes.
Bogies on four and five were followed by back-to-back birdies and then two more birdies on 10 and 13.
Favourite Adam Scott had another mixed day on the Melbourne sandbelt course to finish on four-under.
The world number 12, who will head to the Australian Open in Sydney starting Thursday, failed to recover from a nightmare third round six-over-par 77 in Saturday's third round.