This page explains how Brian Tsang (USATT# 79859)'s rating went from 1718 to 1704 at the 2012 TX Winter Games held on - 14 Jan 2012. 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.