This page explains how Stanley Wallen (USATT# 10898)'s rating went from 1774 to 1751 at the Kentuckiana League event from 3 Jun 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.