This page explains how Samson Dubina (USATT# 9051)'s rating went from 2447 to 2438 at the 2015 Pan Am and National Team Trials held on - 8 Mar 2015. 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.