This page explains how Peter Chung (USATT# 31990)'s rating went from 1653 to 1643 at the Bay Area Table Tennis Federation event from 24 Oct 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.