This page explains how Ben E. Ritter (USATT# 8981)'s rating went from 1509 to 1456 at the Highland Open held on - 17 Oct 2004. 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.