This page explains how Brian Bartley (USATT# 54303)'s rating went from 1880 to 1893 at the SpinBlock Monday Night League event from 6 Dec 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.