This page explains how Ann Alvarez (USATT# 48678)'s rating went from 1869 to 1827 at the 2012 JOOLA N. American Teams O held on - 25 Nov 2012. 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.