This page explains how Sean Patrick O'Neill (USATT# 8840)'s rating went from 2505 to 2495 at the Western Open on the 2002 Stiga held on - 19 May 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.