This page explains how Tsz Lun (Alan) Chu (USATT# 79092)'s rating went from 2037 to 2031 at the Homenetmen Ararat Tournament held on - 1 Mar 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.