This page explains how Philippe Dassonval (USATT# 60396)'s rating went from 1875 to 1889 at the 1999 Champion TTC Summer Open held on - 1 Aug 1999. 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.