This page explains how Antonio Mattos (USATT# 1892)'s rating went from 1605 to 1630 at the Modesto TTC Annual TTT held on - 19 Oct 1996. 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.