This page explains how Umar Brown (USATT# 83534)'s rating went from 889 to 891 at the B'Nets Fall '09 SGLS.LGE event from 24 Sep 2009. 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.