This page explains how Philip E. Gilmore (USATT# 53509)'s rating went from 983 to 865 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.