This page explains how Maria Dalee (USATT# 230607)'s rating went from 869 to 867 at the AZ PTTC Monday event from 3 Jun 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.