This page explains how Howard Hai Vu (USATT# 10018)'s rating went from 1625 to 1643 at the Hawthorne/Northrop Open held on - 16 Mar 1997. 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.