This page explains how Samuel D. Matossian (USATT# 26319)'s rating went from 1413 to 1368 at the LATTF event from 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.