This page explains how Robert L Emerick (USATT# 5612)'s rating went from 1393 to 1311 at the Sacramento Winter Open held on - 1 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.