This page explains how Ihsan Simms (USATT# 221693)'s rating went from 888 to 868 at the Pong Club - South Austin event from 15 Feb 2018. 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.