This page explains how Jeremiah Jeffrey (USATT# 216939)'s rating went from 920 to 889 at the Maryland State Championships held on 10 Jun 2017 - 11 Jun 2017. 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.