Changping Duan
USATT#: 49379
| Coach Level: State | Certified Umpire
2029 2033
USATT Nationals
- 21 Dec 2013
- 21 Dec 2013
This page explains how Changping Duan (USATT# 49379)'s rating went from 2029 to 2033 at the USATT Nationals held on - 21 Dec 2013. 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.