This page explains how Huigang Liang (USATT# 18101)'s rating went from 1859 to 1870 at the September MCCC RR Open held on - 22 Sep 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.