This page explains how Ali Abdelrazzaq (USATT# 79746)'s rating went from 2021 to 1989 at the 2012 Think Spring Open held on - 19 Feb 2012. 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.