This page explains how Rodman F Backus (USATT# 82218)'s rating went from 907 to 904 at the Nashua TTC RR Open held on - 19 Sep 2010. 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.