This page explains how Patrick Engel (USATT# 86114)'s rating went from 1671 to 1606 at the 2013 Indiana State Championship (closed) held on - 21 Apr 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.