CHANNEL Seven mini-golf show Holey Moley has taken a ratings hit since premiering to almost a million sets of eyes across the five major cities last week.
The American game show, which was filmed at Thornlands, was the most watched non-news free-to-air program on opening night but has lost almost half its viewership inside seven days.
It comes as Thornlands man Mark Duncan firms as favourite to win the show, having starred during the program's opening week.
A total of 528,000 people tuned in to Holey Moley on Monday night, down from the 983,000 metro viewers who watched the premiere last week.
It was the smallest audience Holey Moley had recorded since going to air and was a drop of more than 100,000 people on the night before.
Viewership has been steadily declining since the opening episode - with the exception of Sunday night's singles special - but it still outperformed Monday's Australian Open tennis coverage on Channel Nine.
The drop in interest saw Channel Ten's The Amazing Race Australia finish above Holey Moley on the ratings list last night.
Mr Duncan took Holey Moley by storm during the opening week, winning his round to progress to the grand final.
The waste management worker, who started playing golf as a toddler, will take on a course designed by Australian golfing legend Greg Norman for a shot at $100,000.
Mr Duncan, who lives three minutes away from the Holey Moley set, told the Redland City Bulletin in January he had perfected his putting on greens in his childhood backyard.
"I had three holes and they were all undulating," he said. "I mowed it low and got it like a proper putting green.
"I would putt every afternoon after school, so I have had plenty of experience."
"Just getting on TV ... was something that I had always wanted to do and this was a show where I could do that."
Mr Duncan beat 28-year-old former pro golfer Jasmine Finlay and another contestant in a putt-off to win the show's plaid jacket and golden putter, which earned him a place in the final.
He is the $1.30 favourite with bookmaker Sportsbet to win the show.
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