This page explains how Jimmy Butler (USATT# 4594)'s rating went from 2724 to 2684 at the Houston December 1998 RR held on - 5 Dec 1998. 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.