This page explains how Perry Smith (USATT# 27885)'s rating went from 1678 to 1636 at the Jonathan Lian Foothills X Open held on - 13 Nov 2010. 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.