This page explains how Xiangyu Liu (USATT# 77056)'s rating went from 1930 to 1926 at the Princeton Theological Seminary event from 30 Aug 2010. 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.