This page explains how Ihsan Simms (USATT# 221693)'s rating went from 682 to 670 at the Pong Club - South Austin event from 30 Mar 2017. 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.