This page explains how Ann Alvarez (USATT# 48678)'s rating went from 1904 to 1887 at the NJTTC Monday League event from 27 Dec 2004. 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.