This page explains how Simone Cecchini (USATT# 113423)'s rating went from 1570 to 1564 at the LATTF event from 24 Nov 2012. 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.