This page explains how Cole Ely (USATT# 27786)'s rating went from 1558 to 1555 at the Hutchinson 2009 Fall Open held on - 17 Oct 2009. 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.