This page explains how Philippe Dassonval (USATT# 60396)'s rating went from 1893 to 1920 at the NATT October Open At NYTTF held on - 3 Oct 2004. 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.