This page explains how John R. R. Miller (USATT# 18162)'s rating went from 1489 to 1477 at the MDTTC Tuesday/Friday League event from 30 Sep 2016. 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.