Changping Duan
USATT#: 49379
| Coach Level: State | Certified Umpire
2227 2224
Meiklejohn National Seniors
- 8 Jun 2003
- 8 Jun 2003
This page explains how Changping Duan (USATT# 49379)'s rating went from 2227 to 2224 at the Meiklejohn National Seniors held on - 8 Jun 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.