Triple M's Wayne Carey says that there are Bulldogs who quite simply aren't reaching the same heights as their 2016 premiership.
Worse so for the Dogs, Duck said there were around five players that may never reach that level of performance again.
"If you go through their team...there are quite simply five, maybe more, players that will never reach, as I said, that level ever again," he said on the Saturday Rub after their loss to Collingwood.
"They quite simply played out of their skin and they won a premiership from it.
"They might never reach that level again."
Duck was challenged to list a few of those players, and he rattled off a few of their biggest names.