This page explains how Tigran Margaryan (USATT# 275342)'s rating went from 1230 to 1218 at the AZ PTTC Monday event from 20 Nov 2023. 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.