This page explains how Weisung Tsao (USATT# 28857)'s rating went from 2065 to 2052 at the Milpitas Sports Center event from 30 Dec 2006. 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.