This page explains how William R. Swift (USATT# 69926)'s rating went from 1208 to 1210 at the New Hampshire RR Open held on - 15 Feb 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.