# Glicko Calc updated

There was a change to the ACF rating calculation in 2003 which scales down rating adjustments for players with ratings over 2200. For ratings that are less than 2200, then the old Glicko Calc works fine. If your rating is greater then 2300 then changes should be scaled by 75% of the Glicko Calc amount; and for rating in between 2200 and 2300, changes are scaled according or a linear interpolation between 1 and 0.75.

The short story is that I have now implemented this scaling in Glicko Calc and so that facility should be a more accurate predictor of ACF rating changes for players rated over 2200.

Enjoy!

## 2 thoughts on “Glicko Calc updated”

1. Surely their nationality and star sign should be represented in this apocalyptic algorithm.

2. It’s only a very small change to a very small section of the rating pool but onwards and upwards!