This page explains how Yanjun Gao (USATT# 32607)'s rating went from 2574 to 2578 at the Westchester 2013 January Open held on - 27 Jan 2013. 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.