This page explains how Alan Chen (USATT# 88147)'s rating went from 1435 to 1421 at the LYTTC Friday Pro League event from 22 Jan 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.