This page explains how Robert Palgon (USATT# 71032)'s rating went from 1807 to 1769 at the ICC - Advanced League event from 16 Feb 2009. 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.