This page explains how Jia-Yu Sung (USATT# 82230)'s rating went from 1209 to 1199 at the Intermediate League event from 13 Jun 2013. 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.