This page explains how Jon Eric Gustavson (USATT# 20075)'s rating went from 1586 to 1629 at the Atlanta Fall Open held on - 11 Sep 2010. 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.