This page explains how Aleksandr Polovinchik (USATT# 84035)'s rating went from 1461 to 1457 at the LATTF event from 15 Sep 2012. 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.