This page explains how Jiawen (john) Bian (USATT# 17048)'s rating went from 2028 to 2011 at the Experior Club League event from 2 Oct 2021. 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.