This page explains how Cesar T. Serna (USATT# 2316)'s rating went from 2145 to 2144 at the Austin Round Robin held on - 6 Mar 2004. 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.