This page explains how Darren Tang (USATT# 23413)'s rating went from 1980 to 1924 at the 2008 ACUI College Championship held on - 13 Apr 2008. 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.