This page explains how Derek May (USATT# 8144)'s rating went from 2470 to 2511 at the 1995 Olympic Festival held on - 30 Jul 1995. 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.