This page explains how Sean Patrick O'Neill (USATT# 8840)'s rating went from 2498 to 2499 at the Matthew Murad Mem Open held on - 22 Sep 2002. 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.