This page explains how Mario Lorenc (USATT# 51434)'s rating went from 1872 to 1854 at the AZ PTTC Monday event from 3 Jan 2022. 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.