This page explains how Dennis Keppen (USATT# 76520)'s rating went from 1607 to 1571 at the Huntsman World Senior Games held on - 10 Oct 2014. 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.