This page explains how David Phoong (USATT# 25347)'s rating went from 1750 to 1722 at the San Diego Open held on - 5 Nov 2005. 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.