This page explains how Robert (Bobby) Ryberg (USATT# 43623)'s rating went from 1788 to 1749 at the Arizona Open TTT held on - 18 Feb 1996. 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.