This page explains how Abdon Angeles (USATT# 8980)'s rating went from 2056 to 2088 at the Schaumburg Open held on - 19 Oct 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.