This page explains how Sanford Potiker (USATT# 9172)'s rating went from 1779 to 1764 at the Sun TV Canton Open held on - 22 Mar 1997. 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.