This page explains how Don Ray Hamilton (USATT# 27945)'s rating went from 2153 to 2138 at the 11th Annuan Bernard Hock Open held on - 13 Oct 1996. 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.