This page explains how Sahil Puri (USATT# 87025)'s rating went from 2009 to 1999 at the ICC - Advanced League event from 9 Feb 2015. 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.