This page explains how Blair W. Wilson (USATT# 69613)'s rating went from 1687 to 1683 at the Charlotte Winter Loopalalooza held on - 23 Feb 2008. 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.