This page explains how Abdon Angeles (USATT# 8980)'s rating went from 2055 to 2050 at the South Bend Open held on - 16 Feb 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.