This page explains how Jimmy Butler (USATT# 4594)'s rating went from 2565 to 2568 at the 1st Butterfly Austin Fall Classic Round Robin Tournament held on - 19 Oct 2013. 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.