This page explains how Rishi Balakrishnan (USATT# 85808)'s rating went from 648 to 647 at the Beginner League event from 29 Aug 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.