This page explains how Harriet Quon (USATT# 2132)'s rating went from 1229 to 1239 at the Long Beach Table Tennis League event from 15 Feb 2004. 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.