This page explains how Bill Milstead (USATT# 221289)'s rating went from 1428 to 1616 at the Butterfly 2019 Newport News Fall Open held on 2 Nov 2019 - 2 Nov 2019. 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.