This page explains how Aili Elliott (USATT# 41778)'s rating went from 2259 to 2258 at the 2003 Colorado Springs Open held on - 19 Oct 2003. 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.