This page explains how Peter Yu (USATT# 70303)'s rating went from 1955 to 1848 at the 2012 Rochester New York Open held on - 26 Feb 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.