Can't be bothered to go back through his Twitter but a quick google has thrown up the following
https://www.dailystar.co.uk/sport/darts/nine-dart-finish-147-break-29269093
https://www.dailystar.co.uk/sport/darts/wayne-mardle-nine-darter-147-29761549
If you can be bothered to go back through his twitter feed Wayne Mardle took on the snooker crowd a while back saying a nine darter was harder than a 147 break. Now in my opinion that seems like a load of old bollocks but the numbers he produced about the number of televised nine darters...