This page explains how James Goodwin (USATT# 39061)'s rating went from 2176 to 2172 at the WCTTA Saturday League event from 27 May 2017. 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.