Changping Duan
USATT#: 49379
| Coach Level: State | Certified Umpire
2077 2023
2015 JOOLA North American Teams Championships
- 29 Nov 2015
- 29 Nov 2015
This page explains how Changping Duan (USATT# 49379)'s rating went from 2077 to 2023 at the 2015 JOOLA North American Teams Championships held on - 29 Nov 2015. 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.