This page explains how Amir Khan (USATT# 85897)'s rating went from 1794 to 1690 at the Westchester 2015 October Open held on - 25 Oct 2015. 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.