This page explains how John Jarema (USATT# 6975)'s rating went from 1738 to 1720 at the LYTTC Friday Pro League event from 19 Feb 2021. 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.