This page explains how Guo Hui Lu (USATT# 23538)'s rating went from 2316 to 2271 at the LATTF event from 10 Jun 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.