This page explains how Dmytry Osadovsky (USATT# 82470)'s rating went from 991 to 987 at the LATTF event from 11 Nov 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.