This page explains how Steven Horowitz (USATT# 6796)'s rating went from 1980 to 2015 at the 1998 Eastern Open held on - 20 Mar 1998. 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.