This page explains how Robert (Bobby) Ryberg (USATT# 43623)'s rating went from 1790 to 1790 at the Arizona Valley of the Sun Open held on - 3 Dec 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.