This page explains how Trevor A. Smith (USATT# 10121)'s rating went from 1631 to 1639 at the 2008 Potomac Spring Open held on - 25 May 2008. 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.