This page explains how Joe Siemienowski (USATT# 1179257)'s rating went from 878 to 826 at the ASLT League event from 28 Apr 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.