This page explains how Simone Cecchini (USATT# 113423)'s rating went from 1521 to 1519 at the LATTF event from 9 Jun 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.