Changping Duan
USATT#: 49379
| Coach Level: State | Certified Umpire
2193 2183
2010 US Open
- 3 Jul 2010
- 3 Jul 2010
This page explains how Changping Duan (USATT# 49379)'s rating went from 2193 to 2183 at the 2010 US Open held on - 3 Jul 2010. 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.