This page explains how Umar Brown (USATT# 83534)'s rating went from 1197 to 1191 at the 2013 Fall Teams League event from 8 Nov 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.