This page explains how Imtiaz Ahmad (USATT# 81224)'s rating went from 1211 to 1217 at the CATTL DIV 3 event from 30 May 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.