This page explains how Justin Chen (USATT# 78261)'s rating went from n/a to 684 at the 2008 Austin Fall RR held on - 11 Oct 2008. 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.