At Mackey Park, Tempe and also at Royal Sydney Golf Club. Probably 4 qualifying blocks followed by a best-of-3 knockout, plus consolation events.
https://portal.revolutionise.com.au/cnsw/events/319519

NSW GC Open Singles Championship

Brown plate block

Terry Abbott Rodney Peet Ann Clifton Pauline Markwell Wins Net
Hoops
#
Terry Abbott (Killara) 5 lost 6 lost 7 won 1 -2 =2
Rodney Peet (Maitland) 7 won 5 lost 4 lost 1 0 =2
Ann Clifton (Queanbeyan) 7 won 6 won 7 won 3 4 1
Pauline Markwell (Royal Sydney Golf Club) 6 lost 5 won 5 lost 1 -2 =2

There is no known tie break method.