This page explains how Guo Hui Lu (USATT# 23538)'s rating went from 2394 to 2381 at the 2011 Pan Am / National Team Tr held on - 26 Feb 2011. 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.