This page explains how Jiawen (john) Bian (USATT# 17048)'s rating went from 1976 to 1975 at the Schaumburg Christmas Open held on - 18 Dec 2004. 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.