This page explains how James Goodwin (USATT# 39061)'s rating went from 2227 to 2225 at the WCTTA Saturday League event from 7 Jan 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.