This page explains how John Andrade (USATT# 3893)'s rating went from 2028 to 2005 at the NJTTC September Open held on - 19 Sep 1999. 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.