This page explains how Harry D. McKeever (USATT# 12957)'s rating went from 1181 to 1142 at the St. Louis Gateway Open held on - 6 Aug 2000. 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.