This page explains how Matthew Barnes (USATT# 72986)'s rating went from 1583 to 1570 at the Rose City Open 2008 held on - 15 Jun 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.