This page explains how Hao Shi (USATT# 76362)'s rating went from 1862 to 1820 at the ICC Cupertino League event from 8 Feb 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.