This page explains how Bret Bohlman (USATT# 217233)'s rating went from 1568 to 1553 at the SpinBlock Monday Night League event from 1 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.