This page explains how Tom Ruan (USATT# 14167)'s rating went from 1924 to 1917 at the Bay Area Table Tennis Federation event from 18 Jun 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.