This page explains how Guo Hui Lu (USATT# 23538)'s rating went from 2389 to 2389 at the LATTF event from 13 May 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.