This page explains how James S S Goodwin IV (USATT# 93421)'s rating went from 253 to 231 at the SVTTC Sunday U2000 event from 19 Oct 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.