This page explains how Lang Deng (USATT# 74203)'s rating went from 2094 to 2089 at the Bay Area Table Tennis Federation event from 10 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.