This page explains how Gerald Echols (USATT# 30052)'s rating went from 1564 to 1573 at the 2006 Spin Classic Open held on - 14 Oct 2006. 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.