This page explains how Joe Grandalski (USATT# 45745)'s rating went from 1544 to 1531 at the 1995 Millcreek Giant Round Rob held on - 7 May 1995. 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.