Richard L. L. Chang
USATT#: 11577
1147 1139
2020 Arizona Open and Giant Round Robin
22 Feb 2020 - 22 Feb 2020
22 Feb 2020 - 22 Feb 2020
This page explains how Richard L. L. Chang (USATT# 11577)'s rating went from 1147 to 1139 at the 2020 Arizona Open and Giant Round Robin held on 22 Feb 2020 - 22 Feb 2020. The links below take you to pages that describe various aspects of the rating processor.
Introduction
Initial Rating
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.