This page explains how John Mc Dermott (USATT# 93518)'s rating went from 1665 to 1669 at the Westchester 2016 January Open B held on 30 Jan 2016 - 31 Jan 2016. 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.