This page explains how Robert Gabay (USATT# 89503)'s rating went from 1849 to 1841 at the Butterfly MDTTC March Open held on - 3 Mar 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.