This page explains how Derrick Cone (USATT# 64672)'s rating went from 1910 to 1903 at the 2021 Arizona Sizzler Open held on 31 Jul 2021 - 1 Aug 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.