This page explains how Lang Deng (USATT# 74203)'s rating went from 2099 to 2094 at the Bay Area Table Tennis Federation event from 4 Jan 2009. 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.