This page explains how Amer M. Shaw (USATT# 5954)'s rating went from 1866 to 1858 at the Kentuckiana League event from 22 Jul 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.