This page explains how Patrick Sunman Wu (USATT# 60420)'s rating went from 2068 to 2052 at the Ping Pong Dojo event from 22 Sep 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.