https://differentgame.wordpress.com/2015/02/02/tim-howard-leaving-the-comfort-zone/
Statistically, Howard was having an absolute nightmare before his injury. He has the lowest save % of any first choice keeper in the Premier League this season. Adjusting for overall shot quality (
using this method) he fares a touch better and ranks 18th out of 20. But last year, Howard’s numbers were really good and it’s well known amongst the ‘serious stats’ community that shot stopping-wise, goalkeeping performance shows no stability from one year to the next. I’ve spent many many fruitless hours slicing and dicing the data to try and make this randomness not so. It can’t be done!
Therefore, natural curiousity (mania) leads me to question why this randomness happens. What are the factors that effect shot-stopping performance? One that I’ve been banging on about for a long time now is a keeper’s positioning. I first started advocating more conservative positioning
here later calling the the concept of a keeper staying nearer his line ‘not leaving the comfort zone’.