This page explains how James S S Goodwin IV (USATT# 93421)'s rating went from 1577 to 1573 at the WCTTA Saturday League event from 13 Jan 2018. 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.