This page explains how Harriet Quon (USATT# 2132)'s rating went from 1222 to 1225 at the Long Beach Table Tennis League event from 29 Jan 2015. 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.