This page explains how Cory Eider (USATT# 62727)'s rating went from 2269 to 2270 at the Minnesota Saturday Open event from 1 Oct 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.