This page explains how Diane Jiang (USATT# 74742)'s rating went from 870 to 864 at the Milpitas Sports Center event from 26 Jan 2008. 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.