This page explains how Abhinav Gunda (USATT# 89194)'s rating went from 172 to 159 at the Beginner League event from 25 Sep 2013. 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.