This page explains how Diane Jiang (USATT# 74742)'s rating went from 644 to 644 at the Ping Pong Dojo event from 31 May 2008. 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.