This page explains how Joseph Louis Freedman (USATT# 223957)'s rating went from 1507 to 1505 at the SpinBlock Thursday Night Team League event from 13 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.