This page explains how Tony Grimes (USATT# 1171961)'s rating went from 1364 to 1315 at the Knoxville Gold Dollar Fall Open held on 21 Oct 2023 - 21 Oct 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.