This page explains how Rahul Chatwani (USATT# 81586)'s rating went from 270 to 275 at the Beginner League event from 13 Oct 2009. 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.