This page explains how Masaru Hashimoto (USATT# 6491)'s rating went from 2083 to 2081 at the LATTF event from 5 Nov 2011. 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.