This page explains how Jimmy Dorrell (USATT# 60099)'s rating went from 1651 to 1632 at the Waco TT Tournament held on - 1 Aug 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.