This page explains how Jiawen (john) Bian (USATT# 17048)'s rating went from 1817 to 1820 at the Schaumburg No Waiting RR Open held on - 26 Feb 2000. 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.