This page explains how Stanley Hsu (USATT# 97890)'s rating went from 1393 to 1392 at the MDTTC Tuesday/Friday League event from 6 Jan 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.