This page explains how Arthur Cohen (USATT# 19551)'s rating went from n/a to 2089 at the 1999 Champion TTC Summer Open held on - 1 Aug 1999. 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.