This page explains how Perry Smith (USATT# 27885)'s rating went from 1684 to 1678 at the 2010 Lindenwood September Open held on - 26 Sep 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.