This page explains how Patrick Mualem (USATT# 57625)'s rating went from 2191 to 2185 at the MDTTC Saturday League event from 13 May 2012. 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.