This page explains how Frank Valliant (USATT# 16295)'s rating went from 1632 to 1627 at the 2009 State Games of America held on - 2 Aug 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.