This page explains how Joe Siemienowski (USATT# 1179257)'s rating went from 873 to 871 at the ASLT League event from 5 Jan 2024. 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.