This page explains how Judy Chen (USATT# 35087)'s rating went from 1421 to 1408 at the 2007 TX Winter Games held on - 13 Jan 2007. 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.