This page explains how Phong Ho (USATT# 50220)'s rating went from 1979 to 2017 at the Mayo Rolph Cup held on - 15 Dec 2002. 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.