Introducing our new Goalkeeper Distribution Rating

Wes Foderingam

written by – Rangers Report

One of the new features that will be included as part of our Analytical Match Reports will be an advanced stat that rates a goalkeeper on the effectiveness of his distribution.  It will be part of a larger study that I am conducting to see what impact goalie distribution can have on possession & what is the most practical way for a goalkeeper to establish effective possession.

This Goalkeeper Distribution Rating (GDR) goes beyond recording a goalie’s pass completion ratio, rather it measures what percentage of his distribution ends up with the team establishing possession in the opposition’s half of the pitch.  So if it’s a long ball – is it  controlled by a teammate?  If it’s a shorter pass – are his teammates able to bring it up to the offensive end of the field?

Even though the emphasis is on the goalkeeper, his rating is largely reliant on his teammates – how effective are his targets in the air on long balls & how well do his defenders bring the ball out of the back?  Additionally, you can see the effect of a team pressuring higher up the pitch can have on the opposition & what are the best ways to combat that pressure.

Another aspect I am tracking is the success rate of the four means a goalie has of distributing the ball — the long punt up the pitch, a shorter pass, throwing to a teammate, & rolling the ball to a player.   Towards the midpoint of the upcoming season,  I will publish some of these findings.

There are some disclaimers:

  1. I have learned that television directors like to sneak in highlights as the goalie prepares to move the ball up the pitch.  There have been times when I missed how the goalie passed the ball – so the result was not recorded.  So there is a slight margin of error.
  2. Sometimes the rating can be subjective when it pertains to what establishing possession in the offensive half looks like.  There have been times when a teammate gains possession in the offensive end but then promptly loses the ball.  For the most part, I have defined the establishment of possession as a player having the opportunity to sustain possession either by dribbling or by completing a pass.  If a player is fouled or if the opposition knocks the ball out-of-bounds they have retained possession.
  3. Not every distribution from the goalkeeper is included in the rating.  Often a keeper will play a short pass, only to have it played back to him.  Distribution is only calculated if a teammate gets control in the other half or when a teammate loses possession anywhere on the pitch.  Also clearances when the goalie is under pressure do not count in the GDR.

Some samples from the summer:

courtesy of David Eulitt

Of all of the matches I have tracked this summer, Donis Escober’s distribution in a Gold Cup game against the United States had the highest rating.  It should be noted he only had 18 distributions (the lowest amount of any goalie I’ve tracked) but 15 of those distributions resulted in Honduras establishing possession in the United States half of the pitch.  Of all the balls he played, 89% were played from the back.  Escobar is a 34-year old veteran who has spent his entire career with the top club in Honduras, Olimpia, & is currently a teammate of a player many of you know very well – former Rangers midfielder Arnold Peralta.

courtesy of Getty Images

Set to be the new Manchester United goalkeeper, Romero’s distribution rating against Chile in the Copa America final was an example of how an opponents pressure up the pitch can impact a goalkeeper’s intentions.   Romero wanted to play shorter balls but was forced to rely on long balls the majority of the time in an attempt to force Chile back up the pitch.  When he did play the ball short his GDR was 0.64, however when he went with a long ball it dipped to 0.33.

It took a Major League Soccer match between the Chicago Fire & Houston Dynamo to really wonder if the two managers even gave instructions to their goalkeepers on what to do with the ball.  Houston coach Owen Coyle watched his keeper Joe Willis (a reserve in his only game of the season so far) rely on a long punt up the pitch on 26 of his 28 distributions.  The results were a 0.29 GDR overall, meaning the opposition gained regained possession 71% of the time.  The other keeper in the game, Sean Johnson (once tabbed to be a future national team keeper for the United States) was even worse.  His overall GDR was 0.25, with 19 of his 24 distributions being long balls.  His GDR on long balls was 0.16 – meaning Houston regained possession 84% of the time.  It truly was an exercise in futility.


As I mentioned before, this new Goalkeeper Distribution Rating will feature in most of our Analytical Match Reports & the complete results of the ongoing study will be released later this year.

Your questions &/or comments are very much welcome given this is my first attempt to track games in any way.

You can follow Rangers Report on Twitter @TheGersReport

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s