However it's absurd to claim what op did that Purdy is doubtful and then claim he's choking at end of games when the 1 game is literally a game winning TD drive to the 3rd string TE without WR1, WR2/3(depending if you have JJ or Pearsall higher), WR4, WR5, WR6 and Purdy playing half that game on a bad toe.
Here is a week 1-4 QB chart for QB efficiency for which Purdy doesn't fit.
Here is the QB efficiency chart after the 1 game Purdy played in...vs a top 5 defense missing all those weapons
That would place him above Goff in the more recent chart.
It wasn't his cleanest game but he was still excellent especially when you account for the injuries and the opponent.
must be new to these parts.