This page explains how John Foxton (USATT# 13672)'s rating went from 1826 to 1804 at the 2008 Rochester New York Open held on - 24 Feb 2008. 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.