This page explains how Luis Gabriel Luzua (USATT# 1180766)'s rating went from 1973 to 1955 at the AZ PTTC Monday event from 20 May 2024. 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.