This page explains how Douglas Tien (USATT# 55269)'s rating went from 1660 to 1798 at the ICC Northern CA Open held on - 22 Jul 2007. 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.