This page explains how Raphael D Lizama (USATT# 11587)'s rating went from 1834 to 1828 at the 2019 Arizona Sizzler Open held on 27 Jul 2019 - 28 Jul 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.