This page explains how Daniel Moon (USATT# 78855)'s rating went from 1639 to 1632 at the 2011 March Philadelphia Open held on - 13 Mar 2011. 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.