This page explains how John C. Brown (USATT# 223043)'s rating went from 903 to 853 at the 2024 Erie Post-Eclipse Open held on 12 Apr 2024 - 14 Apr 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.