This page explains how Antonio Mattos (USATT# 1892)'s rating went from 1697 to 1664 at the Milpitas Sports Center event from 26 Nov 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.