This page explains how Mathew R. R. Morris (USATT# 78557)'s rating went from 1414 to 1379 at the Summer Open held on - 28 Jul 2012. 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.