This page explains how Jean-Hugo Drouillet Conde (USATT# 31854)'s rating went from 1824 to 1823 at the Oakland-Pitt League event from 15 Aug 2008. 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.