This page explains how Yelena Karshtedt (USATT# 17499)'s rating went from 1426 to 1427 at the ICC CA State Open held on - 20 Mar 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.