This page explains how Sahil Puri (USATT# 87025)'s rating went from 281 to 279 at the ICC - Entry Level League event from 3 Jan 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.