This page explains how Harriet Quon (USATT# 2132)'s rating went from 1309 to 1292 at the Long Beach Table Tennis League event from 7 Apr 2012. 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.