This page explains how John Mc Dermott (USATT# 93518)'s rating went from 650 to 686 at the Westchester 2014 September Open held on - 28 Sep 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.