This page explains how Adrian T Yang (USATT# 97893)'s rating went from 1891 to 1887 at the MDTTC Tuesday/Friday League event from 5 Jan 2018. 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.