Changping Duan
USATT#: 49379
| Coach Level: State | Certified Umpire
2135 2146
Potomac Open
- 17 Nov 2002
- 17 Nov 2002
This page explains how Changping Duan (USATT# 49379)'s rating went from 2135 to 2146 at the Potomac Open held on - 17 Nov 2002. 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.