This page explains how Sihai Chen (USATT# 75555)'s rating went from 1489 to 1485 at the Mohawk Valley TTC League event from 18 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.