This page explains how Tiffany Ke (USATT# 89217)'s rating went from 2171 to 2156 at the MDTTC Saturday League event from 14 Feb 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.