This page explains how Simone Cecchini (USATT# 113423)'s rating went from 1506 to 1477 at the LATTF event from 30 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.