This page explains how Don Ray Hamilton (USATT# 27945)'s rating went from 2170 to 2224 at the 2008 Millcreek Open held on - 19 Oct 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.