This page explains how George S. Aitken (USATT# 3797)'s rating went from 1569 to 1563 at the NJTTC May Open held on - 20 May 2007. 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.