This page explains how Mauricio Vergara (USATT# 28649)'s rating went from 2300 to 2221 at the Kam Man Cup - Metropolitan Ope held on - 4 Sep 2005. 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.