This page explains how Dewei Sun (USATT# 82242)'s rating went from 1544 to 1539 at the Bay Area Table Tennis Federation event from 10 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.