This page explains how Joe Siemienowski (USATT# 1179257)'s rating went from 873 to 850 at the ASLT League event from 22 Sep 2023. 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.