This page explains how John Scarnato (USATT# 21167)'s rating went from 1177 to 1159 at the 2007 Millcreek Open held on - 21 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.