This page explains how Bill Milstead (USATT# 221289)'s rating went from 1612 to 1582 at the Richmond TTC Weekly League event from 30 Jun 2021. 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.