This page explains how James M. Harrell (USATT# 35481)'s rating went from 1552 to 1543 at the 2023 TT&M's Butterfly Fall Open held on 25 Aug 2023 - 27 Aug 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.