This page explains how George Guo (USATT# 4780)'s rating went from 1954 to 1965 at the Grand Rapids Nov. Open held on - 11 Nov 1995. 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.