This page explains how Roberto A. Byles (USATT# 4615)'s rating went from 2177 to 2116 at the 2013 DFWTT Fall Open held on - 9 Nov 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.