This page explains how Joe Grandalski (USATT# 45745)'s rating went from 1673 to 1690 at the 2006 Millcreek Open held on - 29 Oct 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.