Player Impact Rating (PIR)

[Guest soccerfan11]

Most of the threads on this board are dealing with betting systems but I have been thinking over the past week how it could be interesting to find,and express numerically, the impact a player while he is in the game. This could be a useful stat, especially for betting, as it could show how much the loss of a player from the lineup would affect the team. This stat could show how useful and influential a certain player is while he is playing. This is my first "draft" of the formula and I would like some suggestions and feedback from others on this board on how to edit and adjust the formula to make it more accurate. I am posting here because I think it could be an interesting idea to delve deeper into the statistics of players. Method and Formula The way I went at finding the PIR was to look at the player stats, as well as, and compared to, the stats of the team as a whole while the certain player is in the game. The complete formula is (20)*(G/GF)+(20)*(A/GF)+(0.4)*GD-(0.2)*R-(OG/GA). G=Goals scored (excluding penalty kick goals), GF=Goals For, A=Assists, GD=Goal Differencial, R=Red Cards, OG=Own goals, GA=Goals Against. I tested this formula on players from Major League Soccer using stats from the 2002 season. The results seemed to be around what I expected, but the formula could be fixed to be more accurate. I could post my results if anyone wants to see them. I would really appreciate any feedback and suggestions.

[Guest Da Hannanah]

Re: Player Impact Rating (PIR) Sounds like a hellofalota work ;) but I for one will be very interested in seing what such a beast would look like. I think I'll need a few examples, though. That formula looks like ancient Egyptian to me...