This page explains how Ebrahim Aly (USATT# 14471)'s rating went from 1567 to 1565 at the Central FL Winter Open held on - 24 Feb 2007. 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.