This page explains how Tiffany Ke (USATT# 89217)'s rating went from 1904 to 1902 at the MDTTC Saturday League event from 31 May 2015. 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.