This page explains how Steven Claflin (USATT# 18138)'s rating went from 1929 to 1893 at the 2010 Austin Winter Open held on - 20 Feb 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.