This page explains how Roberto A. Byles (USATT# 4615)'s rating went from 2058 to 1905 at the Houston Lunar New Year TT Tour held on - 24 Feb 2007. 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.