This page explains how Horace E. Roberts (USATT# 9499)'s rating went from 2035 to 2030 at the Brooklyn TTC October Open held on - 28 Oct 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.