This page explains how Fred E. Kistler (USATT# 7311)'s rating went from 1680 to 1655 at the 2012 PA State Championships held on - 22 Apr 2012. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.