This page explains how Jan Brown (USATT# 202787)'s rating went from 891 to 887 at the Huntsman World Senior Games 2022 held on 3 Oct 2022 - 6 Oct 2022. 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.