This page explains how Leonardo Ortega (USATT# 926413)'s rating went from 1117 to 1104 at the BTTC League event from 28 Sep 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.