This page explains how Samson Dubina (USATT# 9051)'s rating went from 2514 to 2490 at the 2014 JOOLA North American Teams Championships held on - 30 Nov 2014. 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.