This page explains how Xing Xiong (USATT# 30401)'s rating went from 1999 to 2010 at the Sunrise Super League event from 21 Feb 2020. 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.