This page explains how Fred Cantarelli (USATT# 76404)'s rating went from 2281 to 2256 at the 2011 St. Peters April Open held on - 10 Apr 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.