This page explains how Rafi Hosein (USATT# 17893)'s rating went from 1436 to 1440 at the Long Island Open Championships held on - 29 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.