This page explains how Hsu-Chang Lu (USATT# 84845)'s rating went from 1525 to 1520 at the NJTTC 2012 December Open held on - 9 Dec 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.