This page explains how Robert Spitzer (USATT# 27003)'s rating went from 1642 to 1668 at the 2004 Meiklejohn Quaker City Op held on - 28 Mar 2004. 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.