This page explains how Tiffany Ke (USATT# 89217)'s rating went from 1430 to 1420 at the 2013 Eastern Open on JOOLA North America Tour held on - 9 Jun 2013. 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.