This page explains how Preston Stecklein (USATT# 219273)'s rating went from 2000 to 1997 at the LYTTC Friday Pro League event from 20 Dec 2019. 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.