Changping Duan
USATT#: 49379
| Coach Level: State | Certified Umpire
2224 2213
2003 U.S. Open
- 6 Jul 2003
- 6 Jul 2003
This page explains how Changping Duan (USATT# 49379)'s rating went from 2224 to 2213 at the 2003 U.S. Open held on - 6 Jul 2003. 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.