This page explains how Roger Liu (USATT# 82029)'s rating went from 1525 to 1522 at the 2012 Millcreek Open held on - 21 Oct 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.