This page explains how Marc Maronian (USATT# 61701)'s rating went from 1844 to 1827 at the 2014 Millcreek Open held on - 19 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.