This page explains how Babak Fakharpour (USATT# 61392)'s rating went from 1860 to 1850 at the Portsmouth Jan Open Invitation held on - 3 Jan 1999. 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.