This page explains how Patrick Kin Luen Lui (USATT# 7924)'s rating went from 1904 to 1901 at the MDTTC Saturday League event from 26 Oct 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.