Changping Duan
USATT#: 49379
| Coach Level: State | Certified Umpire
2122 2106
2001 USATT Nationals
- 23 Dec 2001
- 23 Dec 2001
This page explains how Changping Duan (USATT# 49379)'s rating went from 2122 to 2106 at the 2001 USATT Nationals held on - 23 Dec 2001. 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.