This page explains how Ann Alvarez (USATT# 48678)'s rating went from 1859 to 1843 at the NJTTC Monday League event from 24 Apr 2006. 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.