This page explains how Paul A Shelor (USATT# 24924)'s rating went from 1527 to 1512 at the 2006 St. Louis Gateway Open held on - 10 Sep 2006. 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.