This page explains how Max J J Gehrich (USATT# 77809)'s rating went from 1658 to 1619 at the SpinBlock Monday Night League event from 21 Dec 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.