This page explains how Jordan Michelson (USATT# 8330)'s rating went from 1809 to 1804 at the Kentuckiana League event from 7 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.