This page explains how Dennis M. Spellman (USATT# 10185)'s rating went from 1858 to 1858 at the 7th Garden State Open held on - 21 May 2006. 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.