This page explains how William D. Goodfellow (USATT# 90074)'s rating went from 1477 to 1429 at the 2015 Joola Aurora Spring Open held on - 18 Apr 2015. 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.