This page explains how Paul Alan Erickson (USATT# 5640)'s rating went from 1234 to 1205 at the Rockford Spring Open held on - 17 Apr 2004. 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.