This page explains how Malcolm Darukhanawalla (USATT# 73345)'s rating went from 1551 to 1548 at the ICC Juniors and Adults League event from 20 Oct 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.