This page explains how Jia-Yu Sung (USATT# 82230)'s rating went from 418 to 409 at the Beginner League event from 15 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.