This page explains how Nigel Nigel Christopher (USATT# 222870)'s rating went from 2325 to 2320 at the Queen City Open held on - 19 Jun 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.