This page explains how Paul C.T. Liu (USATT# 1628)'s rating went from 1340 to 1289 at the 2010 Memorial Day Open held on - 29 May 2010. 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.