This page explains how Peter Christofolo (USATT# 79607)'s rating went from 1441 to 1433 at the 2011 Longmont Summer Open held on - 11 Jun 2011. 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.