This page explains how Stefano Ratti (USATT# 25847)'s rating went from 2287 to 2273 at the MDTTC Saturday League event from 26 Jan 2014. 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.