This page explains how Marcos Monzon (USATT# 8580)'s rating went from 1911 to 1900 at the LYTTC Friday Pro League event from 7 Feb 2020. 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.