This page explains how Philippe Dassonval (USATT# 60396)'s rating went from 2223 to 2141 at the 2011 DSP Cup/NYTTF Open Series held on - 26 Jun 2011. 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.