This page explains how Stephen Seipp (USATT# 3875)'s rating went from 1395 to 1393 at the St Louis Gateway Open held on - 13 Sep 2009. 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.