This page explains how Warren Shahbazian (USATT# 90998)'s rating went from 907 to 901 at the LYTTC Friday Pro League event from 3 May 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.