This page explains how Paul A. Frisoli (USATT# 1881)'s rating went from 883 to 878 at the New Hampshire RR Open held on - 13 Feb 2005. 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.