This page explains how Corey Mcelveen (USATT# 18230)'s rating went from 1857 to 1855 at the Queen City Open held on - 19 Jun 2004. 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.