This page explains how John R. R. Miller (USATT# 18162)'s rating went from 1240 to 1177 at the MDTTC August Open held on 7 Aug 2021 - 8 Aug 2021. 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.