This page explains how George Sanguinetti (USATT# 9713)'s rating went from 2045 to 2027 at the Sacramento Winter Open held on - 23 Feb 2002. 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.