This page explains how Danuta M. Andrzejewska (USATT# 58353)'s rating went from 1784 to 1778 at the BTTC Members League event from 18 Sep 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.