This page explains how Claude Boulard (USATT# 197)'s rating went from 1712 to 1664 at the Framingham TTC September Open held on - 18 Sep 2005. 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.