This page explains how Shelly Miller (USATT# 201533)'s rating went from 1289 to 1284 at the AZ PTTC Monday event from 28 Jun 2021. The links below take you to pages that describe various aspects of the ratings processor.

The ratings 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.