This page explains how Marcos Monzon (USATT# 8580)'s rating went from 1989 to 1979 at the NJTTC Thursday Adv League event from 31 Aug 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.