I don't contribute to this forum any longer, other than looking in every day....(family and health problems,within the last few years,etc)
However, I'm a retired FA coach (amongst other things).....Although I didn't sit my full badge, I worked at Lilleshall for a spell in the early 90's, and during my studies of The Player Performance Stats Module..it was accepted that every 'match day' stat recorded for outfield players was, and still is, a little unfair when including the Goal Keeper stats within the overall post match/ team analysis.
Why?.....simple - the overall average of minor mistakes each player makes over the 90 mins in every part of the playing field of play, is generally always cancelled out / ignored, immediately, due to the ongoing flow of play.
In other words - A player may receive the MOM Award for overall contribution, including a high % of completed passes etc, yet the keeper lets in an arguably 50/50 save, and then because it looks like a howler, he is deemed the villain...yeah?
He might have made only one mistake all match, yet he cost us the points.
....That said, we haven't seen a confident Keeper performance since Pickford....have we ?