This page explains how Irina Hellwig (USATT# 11612)'s rating went from 1341 to 1368 at the Reno-Sparks Spring Tournament held on - 4 Apr 2009. 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.