This page explains how Brian Chen (USATT# 31519)'s rating went from 1901 to 1892 at the Ping Pong Dojo event from 12 Jul 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.